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Pionnier du vaccin contre la Covid-19 administré par voie nasale, LoValTech s’installe à MAME

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  • Travel alerts
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At Intrepid, the safety of our travellers, leaders and operators is a major priority. 

Since our very first days as a tour operator, travelling responsibly and safely has been at the heart of everything we do. With this in mind, we monitor world events very closely. Intrepid makes operational decisions based on informed advice from a number of sources. 

Read Intrepid’s Safety Policy

Current travel alerts

Taiwan, updated 23 april 2024.

TAIWAN A 7.5 magnitude earthquake occurred off the coast of Taiwan on 3 April 2024, resulting in some damage to infrastructure, particularly in Hualien County, including Taroko Gorge, in the east of the country. All Intrepid travellers who were in the country at the time are safe and accounted for. Rescue and reconstruction efforts continue in Hualien and Taroko Gorge is closed until further notice. The following departures will operate as scheduled on an amended itinerary, with the 2 nights in Hualien replaced with an additional night each in Yilan and Puli:

CJSA240418 CJSA240420 CJSA240427 CJSA240502

Further aftershocks continue to be experienced around Hualien, including one of 6.1 on 23 April 2024. Our groups currently in Taiwan are unaffected and continuing their travels as planned.

Jordan, Updated 15 April 2024

Intrepid has accounted for all our customers and tour leaders in Jordan and our trips in Jordan (and related combination trips to Egypt and Jordan) continue to operate as normal, following airstrikes by Iran on Israel on 13 April.

Safety is Intrepid’s top priority and government travel advisories for Jordan from countries including Australia, the UK, Canada and the United States remain at the same level as before the airstrikes.  

Customers are advised to contact their Booking Agent with any questions regarding their upcoming travel to Jordan or Egypt.

Travel advisories

Intrepid follows government travel advisories from our key traveller markets when making decisions about operating trips in destinations. As the advice may differ depending on your location, it is important to consult your own local foreign travel advisory when considering if travel to a destination is permitted or appropriate for you.

Australia: Smartraveller Canada: Travel Advice and Advisories New Zealand: SafeTravel United Kingdom: Foreign Travel Advice United States: US Department of State – Bureau of Consular Affairs

Entry, health and visa requirements

Get the latest information on travel documents and visa requirements, plus local government COVID-19 vaccination and quarantine policies around the world.

Find out more

How we monitor safety on our trips

We constantly monitor global issues, ensuring we have an in-depth understanding of the areas we visit. With multiple operational offices around the world in a variety of destinations, Intrepid has access to real-time safety updates and information within the countries we travel to. These staff are available to provide support to travellers on the ground if required. 

Get in touch

If you have any concerns, you can contact our support team online or over the phone.

Writing a story? Find official company statements on global incidents by visiting the Intrepid Newsroom. 

Link to Safe travels hub

Safe travels

Everything you need to know about our safety guidelines, booking conditions and trip departures, so you can travel with confidence.

Safe travels hub

  • Patient Care & Health Information
  • Diseases & Conditions
  • Coronavirus disease 2019 (COVID-19)

COVID-19, also called coronavirus disease 2019, is an illness caused by a virus. The virus is called severe acute respiratory syndrome coronavirus 2, or more commonly, SARS-CoV-2. It started spreading at the end of 2019 and became a pandemic disease in 2020.

Coronavirus

  • Coronavirus

Coronaviruses are a family of viruses. These viruses cause illnesses such as the common cold, severe acute respiratory syndrome (SARS), Middle East respiratory syndrome (MERS) and coronavirus disease 2019 (COVID-19).

The virus that causes COVID-19 spreads most commonly through the air in tiny droplets of fluid between people in close contact. Many people with COVID-19 have no symptoms or mild illness. But for older adults and people with certain medical conditions, COVID-19 can lead to the need for care in the hospital or death.

Staying up to date on your COVID-19 vaccine helps prevent serious illness, the need for hospital care due to COVID-19 and death from COVID-19 . Other ways that may help prevent the spread of this coronavirus includes good indoor air flow, physical distancing, wearing a mask in the right setting and good hygiene.

Medicine can limit the seriousness of the viral infection. Most people recover without long-term effects, but some people have symptoms that continue for months.

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Typical COVID-19 symptoms often show up 2 to 14 days after contact with the virus.

Symptoms can include:

  • Shortness of breath.
  • Loss of taste or smell.
  • Extreme tiredness, called fatigue.
  • Digestive symptoms such as upset stomach, vomiting or loose stools, called diarrhea.
  • Pain, such as headaches and body or muscle aches.
  • Fever or chills.
  • Cold-like symptoms such as congestion, runny nose or sore throat.

People may only have a few symptoms or none. People who have no symptoms but test positive for COVID-19 are called asymptomatic. For example, many children who test positive don't have symptoms of COVID-19 illness. People who go on to have symptoms are considered presymptomatic. Both groups can still spread COVID-19 to others.

Some people may have symptoms that get worse about 7 to 14 days after symptoms start.

Most people with COVID-19 have mild to moderate symptoms. But COVID-19 can cause serious medical complications and lead to death. Older adults or people who already have medical conditions are at greater risk of serious illness.

COVID-19 may be a mild, moderate, severe or critical illness.

  • In broad terms, mild COVID-19 doesn't affect the ability of the lungs to get oxygen to the body.
  • In moderate COVID-19 illness, the lungs also work properly but there are signs that the infection is deep in the lungs.
  • Severe COVID-19 means that the lungs don't work correctly, and the person needs oxygen and other medical help in the hospital.
  • Critical COVID-19 illness means the lung and breathing system, called the respiratory system, has failed and there is damage throughout the body.

Rarely, people who catch the coronavirus can develop a group of symptoms linked to inflamed organs or tissues. The illness is called multisystem inflammatory syndrome. When children have this illness, it is called multisystem inflammatory syndrome in children, shortened to MIS -C. In adults, the name is MIS -A.

When to see a doctor

Contact a healthcare professional if you test positive for COVID-19 . If you have symptoms and need to test for COVID-19 , or you've been exposed to someone with COVID-19 , a healthcare professional can help.

People who are at high risk of serious illness may get medicine to block the spread of the COVID-19 virus in the body. Or your healthcare team may plan regular checks to monitor your health.

Get emergency help right away for any of these symptoms:

  • Can't catch your breath or have problems breathing.
  • Skin, lips or nail beds that are pale, gray or blue.
  • New confusion.
  • Trouble staying awake or waking up.
  • Chest pain or pressure that is constant.

This list doesn't include every emergency symptom. If you or a person you're taking care of has symptoms that worry you, get help. Let the healthcare team know about a positive test for COVID-19 or symptoms of the illness.

More Information

  • COVID-19 vs. flu: Similarities and differences
  • COVID-19, cold, allergies and the flu
  • Unusual symptoms of coronavirus

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COVID-19 is caused by infection with the severe acute respiratory syndrome coronavirus 2, also called SARS-CoV-2.

The coronavirus spreads mainly from person to person, even from someone who is infected but has no symptoms. When people with COVID-19 cough, sneeze, breathe, sing or talk, their breath may be infected with the COVID-19 virus.

The coronavirus carried by a person's breath can land directly on the face of a nearby person, after a sneeze or cough, for example. The droplets or particles the infected person breathes out could possibly be breathed in by other people if they are close together or in areas with low air flow. And a person may touch a surface that has respiratory droplets and then touch their face with hands that have the coronavirus on them.

It's possible to get COVID-19 more than once.

  • Over time, the body's defense against the COVID-19 virus can fade.
  • A person may be exposed to so much of the virus that it breaks through their immune defense.
  • As a virus infects a group of people, the virus copies itself. During this process, the genetic code can randomly change in each copy. The changes are called mutations. If the coronavirus that causes COVID-19 changes in ways that make previous infections or vaccination less effective at preventing infection, people can get sick again.

The virus that causes COVID-19 can infect some pets. Cats, dogs, hamsters and ferrets have caught this coronavirus and had symptoms. It's rare for a person to get COVID-19 from a pet.

Risk factors

The main risk factors for COVID-19 are:

  • If someone you live with has COVID-19 .
  • If you spend time in places with poor air flow and a higher number of people when the virus is spreading.
  • If you spend more than 30 minutes in close contact with someone who has COVID-19 .

Many factors affect your risk of catching the virus that causes COVID-19 . How long you are in contact, if the space has good air flow and your activities all affect the risk. Also, if you or others wear masks, if someone has COVID-19 symptoms and how close you are affects your risk. Close contact includes sitting and talking next to one another, for example, or sharing a car or bedroom.

It seems to be rare for people to catch the virus that causes COVID-19 from an infected surface. While the virus is shed in waste, called stool, COVID-19 infection from places such as a public bathroom is not common.

Serious COVID-19 illness risk factors

Some people are at a higher risk of serious COVID-19 illness than others. This includes people age 65 and older as well as babies younger than 6 months. Those age groups have the highest risk of needing hospital care for COVID-19 .

Not every risk factor for serious COVID-19 illness is known. People of all ages who have no other medical issues have needed hospital care for COVID-19 .

Known risk factors for serious illness include people who have not gotten a COVID-19 vaccine. Serious illness also is a higher risk for people who have:

  • Sickle cell disease or thalassemia.
  • Serious heart diseases and possibly high blood pressure.
  • Chronic kidney, liver or lung diseases.

People with dementia or Alzheimer's also are at higher risk, as are people with brain and nervous system conditions such as stroke. Smoking increases the risk of serious COVID-19 illness. And people with a body mass index in the overweight category or obese category may have a higher risk as well.

Other medical conditions that may raise the risk of serious illness from COVID-19 include:

  • Cancer or a history of cancer.
  • Type 1 or type 2 diabetes.
  • Weakened immune system from solid organ transplants or bone marrow transplants, some medicines, or HIV .

This list is not complete. Factors linked to a health issue may raise the risk of serious COVID-19 illness too. Examples are a medical condition where people live in a group home, or lack of access to medical care. Also, people with more than one health issue, or people of older age who also have health issues have a higher chance of severe illness.

Related information

  • COVID-19: Who's at higher risk of serious symptoms? - Related information COVID-19: Who's at higher risk of serious symptoms?

Complications

Complications of COVID-19 include long-term loss of taste and smell, skin rashes, and sores. The illness can cause trouble breathing or pneumonia. Medical issues a person already manages may get worse.

Complications of severe COVID-19 illness can include:

  • Acute respiratory distress syndrome, when the body's organs do not get enough oxygen.
  • Shock caused by the infection or heart problems.
  • Overreaction of the immune system, called the inflammatory response.
  • Blood clots.
  • Kidney injury.

Post-COVID-19 syndrome

After a COVID-19 infection, some people report that symptoms continue for months, or they develop new symptoms. This syndrome has often been called long COVID, or post- COVID-19 . You might hear it called long haul COVID-19 , post-COVID conditions or PASC. That's short for post-acute sequelae of SARS -CoV-2.

Other infections, such as the flu and polio, can lead to long-term illness. But the virus that causes COVID-19 has only been studied since it began to spread in 2019. So, research into the specific effects of long-term COVID-19 symptoms continues.

Researchers do think that post- COVID-19 syndrome can happen after an illness of any severity.

Getting a COVID-19 vaccine may help prevent post- COVID-19 syndrome.

  • Long-term effects of COVID-19

The Centers for Disease Control and Prevention (CDC) recommends a COVID-19 vaccine for everyone age 6 months and older. The COVID-19 vaccine can lower the risk of death or serious illness caused by COVID-19. It lowers your risk and lowers the risk that you may spread it to people around you.

The COVID-19 vaccines available in the United States are:

2023-2024 Pfizer-BioNTech COVID-19 vaccine. This vaccine is available for people age 6 months and older.

Among people with a typical immune system:

  • Children age 6 months up to age 4 years are up to date after three doses of a Pfizer-BioNTech COVID-19 vaccine.
  • People age 5 and older are up to date after one Pfizer-BioNTech COVID-19 vaccine.
  • For people who have not had a 2023-2024 COVID-19 vaccination, the CDC recommends getting an additional shot of that updated vaccine.

2023-2024 Moderna COVID-19 vaccine. This vaccine is available for people age 6 months and older.

  • Children ages 6 months up to age 4 are up to date if they've had two doses of a Moderna COVID-19 vaccine.
  • People age 5 and older are up to date with one Moderna COVID-19 vaccine.

2023-2024 Novavax COVID-19 vaccine. This vaccine is available for people age 12 years and older.

  • People age 12 years and older are up to date if they've had two doses of a Novavax COVID-19 vaccine.

In general, people age 5 and older with typical immune systems can get any vaccine approved or authorized for their age. They usually don't need to get the same vaccine each time.

Some people should get all their vaccine doses from the same vaccine maker, including:

  • Children ages 6 months to 4 years.
  • People age 5 years and older with weakened immune systems.
  • People age 12 and older who have had one shot of the Novavax vaccine should get the second Novavax shot in the two-dose series.

Talk to your healthcare professional if you have any questions about the vaccines for you or your child. Your healthcare team can help you if:

  • The vaccine you or your child got earlier isn't available.
  • You don't know which vaccine you or your child received.
  • You or your child started a vaccine series but couldn't finish it due to side effects.

People with weakened immune systems

Your healthcare team may suggest added doses of COVID-19 vaccine if you have a moderately or seriously weakened immune system. The FDA has also authorized the monoclonal antibody pemivibart (Pemgarda) to prevent COVID-19 in some people with weakened immune systems.

Control the spread of infection

In addition to vaccination, there are other ways to stop the spread of the virus that causes COVID-19 .

If you are at a higher risk of serious illness, talk to your healthcare professional about how best to protect yourself. Know what to do if you get sick so you can quickly start treatment.

If you feel ill or have COVID-19 , stay home and away from others, including pets, if possible. Avoid sharing household items such as dishes or towels if you're sick.

In general, make it a habit to:

  • Test for COVID-19 . If you have symptoms of COVID-19 test for the infection. Or test five days after you came in contact with the virus.
  • Help from afar. Avoid close contact with anyone who is sick or has symptoms, if possible.
  • Wash your hands. Wash your hands well and often with soap and water for at least 20 seconds. Or use an alcohol-based hand sanitizer with at least 60% alcohol.
  • Cover your coughs and sneezes. Cough or sneeze into a tissue or your elbow. Then wash your hands.
  • Clean and disinfect high-touch surfaces. For example, clean doorknobs, light switches, electronics and counters regularly.

Try to spread out in crowded public areas, especially in places with poor airflow. This is important if you have a higher risk of serious illness.

The CDC recommends that people wear a mask in indoor public spaces if you're in an area with a high number of people with COVID-19 in the hospital. They suggest wearing the most protective mask possible that you'll wear regularly, that fits well and is comfortable.

  • COVID-19 vaccines: Get the facts - Related information COVID-19 vaccines: Get the facts
  • Comparing the differences between COVID-19 vaccines - Related information Comparing the differences between COVID-19 vaccines
  • Different types of COVID-19 vaccines: How they work - Related information Different types of COVID-19 vaccines: How they work
  • Debunking COVID-19 myths - Related information Debunking COVID-19 myths

Travel and COVID-19

Travel brings people together from areas where illnesses may be at higher levels. Masks can help slow the spread of respiratory diseases in general, including COVID-19 . Masks help the most in places with low air flow and where you are in close contact with other people. Also, masks can help if the places you travel to or through have a high level of illness.

Masking is especially important if you or a companion have a high risk of serious illness from COVID-19 .

  • COVID-19 travel advice
  • COVID-19 vaccines
  • COVID-19 vaccines for kids: What you need to know
  • Debunking coronavirus myths
  • Different COVID-19 vaccines
  • Fight coronavirus (COVID-19) transmission at home
  • Herd immunity and coronavirus
  • How well do face masks protect against COVID-19?
  • Safe outdoor activities during the COVID-19 pandemic
  • Safety tips for attending school during COVID-19
  • COVID-19 and vitamin D
  • COVID-19: How can I protect myself?
  • Mayo Clinic Minute: How dirty are common surfaces?
  • Mayo Clinic Minute: You're washing your hands all wrong
  • Goldman L, et al., eds. COVID-19: Epidemiology, clinical manifestations, diagnosis, community prevention, and prognosis. In: Goldman-Cecil Medicine. 27th ed. Elsevier; 2024. https://www.clinicalkey.com. Accessed Dec. 17, 2023.
  • Coronavirus disease 2019 (COVID-19) treatment guidelines. National Institutes of Health. https://www.covid19treatmentguidelines.nih.gov/. Accessed Dec. 18, 2023.
  • AskMayoExpert. COVID-19: Testing, symptoms. Mayo Clinic; Nov. 2, 2023.
  • Symptoms of COVID-19. Centers for Disease Control and Preventions. https://www.cdc.gov/coronavirus/2019-ncov/symptoms-testing/symptoms.html. Accessed Dec. 20, 2023.
  • AskMayoExpert. COVID-19: Outpatient management. Mayo Clinic; Oct. 10, 2023.
  • Morris SB, et al. Case series of multisystem inflammatory syndrome in adults associated with SARS-CoV-2 infection — United Kingdom and United States, March-August 2020. MMWR. Morbidity and Mortality Weekly Report 2020;69:1450. DOI: http://dx.doi.org/10.15585/mmwr.mm6940e1external icon.
  • COVID-19 testing: What you need to know. Centers for Disease Control and Prevention. https://www.cdc.gov/coronavirus/2019-ncov/symptoms-testing/testing.html. Accessed Dec. 20, 2023.
  • SARS-CoV-2 in animals. American Veterinary Medical Association. https://www.avma.org/resources-tools/one-health/covid-19/sars-cov-2-animals-including-pets. Accessed Jan. 17, 2024.
  • Understanding exposure risk. Centers for Disease Control and Prevention. https://www.cdc.gov/coronavirus/2019-ncov/your-health/risks-exposure.html. Accessed Jan. 10, 2024.
  • People with certain medical conditions. Centers for Disease Control and Prevention. https://www.cdc.gov/coronavirus/2019-ncov/need-extra-precautions/people-with-medical-conditions.html. Accessed Jan. 10, 2024.
  • Factors that affect your risk of getting very sick from COVID-19. Centers for Disease Control and Prevention. https://www.cdc.gov/coronavirus/2019-ncov/your-health/risks-getting-very-sick.html. Accessed Jan. 10, 2024.
  • Regan JJ, et al. Use of Updated COVID-19 Vaccines 2023-2024 Formula for Persons Aged ≥6 Months: Recommendations of the Advisory Committee on Immunization Practices—United States, September 2023. MMWR. Morbidity and Mortality Weekly Report 2023; 72:1140–1146. DOI: http://dx.doi.org/10.15585/mmwr.mm7242e1.
  • Long COVID or post-COVID conditions. Centers for Disease Control and Prevention. https://www.cdc.gov/coronavirus/2019-ncov/long-term-effects/index.html. Accessed Jan. 10, 2024.
  • Stay up to date with your vaccines. Centers for Disease Control and Prevention. https://www.cdc.gov/coronavirus/2019-ncov/vaccines/stay-up-to-date.html. Accessed Jan. 10, 2024.
  • Interim clinical considerations for use of COVID-19 vaccines currently approved or authorized in the United States. Centers for Disease Control and Prevention. https://www.cdc.gov/vaccines/covid-19/clinical-considerations/covid-19-vaccines-us.html#CoV-19-vaccination. Accessed Jan. 10, 2024.
  • Use and care of masks. Centers for Disease Control and Prevention. https://www.cdc.gov/coronavirus/2019-ncov/prevent-getting-sick/about-face-coverings.html. Accessed Jan. 10, 2024.
  • How to protect yourself and others. Centers for Disease Control and Prevention. https://www.cdc.gov/coronavirus/2019-ncov/prevent-getting-sick/prevention.html. Accessed Jan. 10, 2024.
  • People who are immunocompromised. Centers for Disease Control and Prevention. https://www.cdc.gov/coronavirus/2019-ncov/need-extra-precautions/people-who-are-immunocompromised.html. Accessed Jan. 10, 2024.
  • Masking during travel. Centers for Disease Control and Prevention. https://wwwnc.cdc.gov/travel/page/masks. Accessed Jan. 10, 2024.
  • AskMayoExpert. COVID-19: Testing. Mayo Clinic. 2023.
  • COVID-19 test basics. U.S. Food and Drug Administration. https://www.fda.gov/consumers/consumer-updates/covid-19-test-basics. Accessed Jan. 11, 2024.
  • At-home COVID-19 antigen tests — Take steps to reduce your risk of false negative results: FDA safety communication. U.S. Food and Drug Administration. https://www.fda.gov/medical-devices/safety-communications/home-covid-19-antigen-tests-take-steps-reduce-your-risk-false-negative-results-fda-safety. Accessed Jan. 11, 2024.
  • Interim clinical considerations for COVID-19 treatment in outpatients. Centers for Disease Control and Prevention. https://www.cdc.gov/coronavirus/2019-ncov/hcp/clinical-care/outpatient-treatment-overview.html. Accessed Jan. 11, 2024.
  • Know your treatment options for COVID-19. U.S. Food and Drug Administration. https://www.fda.gov/consumers/consumer-updates/know-your-treatment-options-covid-19. Accessed Jan. 11, 2024.
  • AskMayoExpert. COVID:19 Drug regimens and other treatment options. Mayo Clinic. 2023.
  • Preventing spread of respiratory viruses when you're sick. Centers for Disease Control and Prevention. https://www.cdc.gov/respiratory-viruses/prevention/precautions-when-sick.html. Accessed March 5, 2024.
  • AskMayoExpert. COVID-19: Quarantine and isolation. Mayo Clinic. 2023.
  • COVID-19 resource and information guide. National Alliance on Mental Illness. https://www.nami.org/Support-Education/NAMI-HelpLine/COVID-19-Information-and-Resources/COVID-19-Resource-and-Information-Guide. Accessed Jan. 11, 2024.
  • COVID-19 overview and infection prevention and control priorities in non-U.S. healthcare settings. Centers for Disease Control and Prevention. https://www.cdc.gov/coronavirus/2019-ncov/hcp/non-us-settings/overview/index.html. Accessed Jan. 16, 2024.
  • Kim AY, et al. COVID-19: Management in hospitalized adults. https://www.uptodate.com/contents/search. Accessed Jan. 17, 2024.
  • O'Horo JC, et al. Outcomes of COVID-19 with the Mayo Clinic Model of Care and Research. Mayo Clinic Proceedings. 2021; doi:10.1016/j.mayocp.2020.12.006.
  • At-home OTC COVID-19 diagnostic tests. U.S. Food and Drug Administration. https://www.fda.gov/medical-devices/coronavirus-covid-19-and-medical-devices/home-otc-covid-19-diagnostic-tests. Accessed Jan. 22, 2024.
  • Emergency use authorizations for drugs and non-vaccine biological products. U.S. Food and Drug Association. https://www.fda.gov/drugs/emergency-preparedness-drugs/emergency-use-authorizations-drugs-and-non-vaccine-biological-products. Accessed March 25, 2024.
  • Coronavirus infection by race
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  • COVID-19 and your mental health
  • COVID-19 drugs: Are there any that work?
  • COVID-19 in babies and children
  • COVID-19 variant
  • COVID-19: Who's at higher risk of serious symptoms?
  • How do COVID-19 antibody tests differ from diagnostic tests?
  • Is hydroxychloroquine a treatment for COVID-19?
  • Pregnancy and COVID-19
  • Sex and COVID-19
  • Treating COVID-19 at home

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  • COVID-19 antibody testing
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  • Extracorporeal membrane oxygenation (ECMO)

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  • Volume 14, Issue 4
  • Colchicine for the treatment of patients with COVID-19: an updated systematic review and meta-analysis of randomised controlled trials
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  • http://orcid.org/0000-0001-6783-7137 Huzaifa Ahmad Cheema 1 ,
  • Uzair Jafar 1 ,
  • Abia Shahid 1 ,
  • Waniyah Masood 2 ,
  • Muhammad Usman 1 ,
  • Alaa Hamza Hermis 3 ,
  • Muhammad Arsal Naseem 1 ,
  • Syeda Sahra 4 ,
  • Ranjit Sah 5 ,
  • http://orcid.org/0000-0001-5577-0940 Ka Yiu Lee 6
  • 1 Department of Medicine , King Edward Medical University , Lahore , Pakistan
  • 2 Department of Medicine , Dow University of Health Sciences , Karachi , Pakistan
  • 3 Nursing College, Al-Mustaqbal University , 51001 Hillah , Babylon , Iraq
  • 4 Department of Infectious Diseases , The University of Oklahoma Health Sciences Center , Oklahoma City , Oklahoma , USA
  • 5 Department of Microbiology , Dr. D. Y. Patil Medical College, Hospital and Research Centre, Dr. D. Y. Patil Vidyapeeth , Pune 411018 , Maharashtra , India
  • 6 Swedish Winter Sports Research Centre, Department of Health Sciences , Mid Sweden University , Sundsvall , Sweden
  • Correspondence to Dr Ka Yiu Lee; kyle.lee{at}miun.se

Objectives We conducted an updated systematic review and meta-analysis to investigate the effect of colchicine treatment on clinical outcomes in patients with COVID-19.

Design Systematic review and meta-analysis.

Data sources We searched PubMed, Embase, the Cochrane Library, medRxiv and ClinicalTrials.gov from inception to January 2023.

Eligibility criteria All randomised controlled trials (RCTs) that investigated the efficacy of colchicine treatment in patients with COVID-19 as compared with placebo or standard of care were included. There were no language restrictions. Studies that used colchicine prophylactically were excluded.

Data extraction and synthesis We extracted all information relating to the study characteristics, such as author names, location, study population, details of intervention and comparator groups, and our outcomes of interest. We conducted our meta-analysis by using RevMan V.5.4 with risk ratio (RR) and mean difference as the effect measures.

Results We included 23 RCTs (28 249 participants) in this systematic review. Colchicine did not decrease the risk of mortality (RR 0.99; 95% CI 0.93 to 1.05; I 2 =0%; 20 RCTs, 25 824 participants), with the results being consistent among both hospitalised and non-hospitalised patients. There were no significant differences between the colchicine and control groups in other relevant clinical outcomes, including the incidence of mechanical ventilation (RR 0.75; 95% CI 0.48 to 1.18; p=0.22; I 2 =40%; 8 RCTs, 13 262 participants), intensive care unit admission (RR 0.77; 95% CI 0.49 to 1.22; p=0.27; I 2 =0%; 6 RCTs, 961 participants) and hospital admission (RR 0.74; 95% CI 0.48 to 1.16; p=0.19; I 2 =70%; 3 RCTs, 8572 participants).

Conclusions The results of this meta-analysis do not support the use of colchicine as a treatment for reducing the risk of mortality or improving other relevant clinical outcomes in patients with COVID-19. However, RCTs investigating early treatment with colchicine (within 5 days of symptom onset or in patients with early-stage disease) are needed to fully elucidate the potential benefits of colchicine in this patient population.

PROSPERO registration number CRD42022369850.

  • CLINICAL PHARMACOLOGY

Data availability statement

Data are available on reasonable request.

This is an open access article distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited, appropriate credit is given, any changes made indicated, and the use is non-commercial. See:  http://creativecommons.org/licenses/by-nc/4.0/ .

https://doi.org/10.1136/bmjopen-2023-074373

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STRENGTHS AND LIMITATIONS OF THIS STUDY

This systematic review used a comprehensive search for articles evaluating colchicine treatment for patients with COVID-19.

We performed, to our knowledge, the largest meta-analysis to date by pooling results from 23 trials.

There was significant interstudy heterogeneity in the overall analysis of some outcomes, such as length of hospitalisation.

Our results may not be generalisable to the use of colchicine early in the course of the disease as most randomised controlled trials studied late-stage treatment.

Introduction

Unprecedented global research has been conducted as a result of the COVID-19 pandemic. Even though particular antiviral medications, immunomodulators and monoclonal antibodies have been approved to treat COVID-19, 1–4 ongoing clinical trials are being conducted to combat the virus more successfully, particularly using repurposed drugs and herbal medicines that provide a cheap therapeutic alternative. 5–8 Limited knowledge of COVID-19 molecular mechanisms and pathophysiology, lack of definitive supporting evidence and expensive costs of some treatment options are some of the challenges faced in using different drugs for COVID-19. 9 10

Colchicine, an anti-inflammatory medication commonly used to treat gout, recurrent pericarditis and familial Mediterranean fever, is being extensively investigated among COVID-19 patients. 11 Inhibiting neutrophil chemotaxis, suppressing inflammasome signalling and preventing the cytokine storm through microtubule depolarisation are some of the potential benefits of colchicine in treating COVID-19. 11 Currently, guidelines from the WHO recommend against treatment with colchicine based on data from 10 studies. 1

Although colchicine has been the subject of multiple clinical trials in COVID-19 patients, findings from smaller randomised controlled trials (RCTs) that were positive were later contradicted by results from major RCTs. 11 Therefore, we performed this meta-analysis to evaluate the safety and efficacy of colchicine for the treatment of COVID-19 patients and to interpret the significance of the latest data by incorporating it into our review.

Our systematic review and meta-analysis was registered with PROSPERO (CRD42022369850) and conducted by following the recommendations of Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA). 12 The PRISMA checklist is provided in online supplemental table 1 .

Supplemental material

Data sources and search strategy.

We searched MEDLINE (via PubMed), Embase, the Cochrane Library, medRxiv and ClinicalTrials.gov from inception to January 2023 using a search strategy consisting of terms related to “colchicine” and “COVID-19” without any restrictions. Grey literature and the reference lists of the relevant studies were also explored to include all eligible trials. We did not restrict our search based on language. The detailed search strategy for different databases is given in online supplemental table 2 .

Eligibility criteria

The inclusion criteria were (1) population: patients with a diagnosis of COVID-19; (2) intervention: colchicine regardless of dosing or regimen; (3) comparator: placebo or standard of care; (4) outcome: reporting any outcome of interest and (5) study design: RCTs only. Observational studies, quasi-randomised trials and studies that used colchicine prophylactically were excluded.

Study selection

All the literature obtained from our searches was imported into Mendeley Desktop V.1.19.8 and duplicates were removed. The remaining articles were subjected to a rigorous screening process by two independent reviewers in a two-stage process (title/abstract screening followed by full-text screening).

Data extraction and outcomes

We extracted all information relating to the study characteristics such as author names, location, study population, details of intervention and comparator groups, and our outcomes of interest. We chose all-cause mortality as our primary outcome while the secondary outcomes included the incidence of mechanical ventilation (MV), risk of intensive care unit (ICU) admission, risk of hospitalisation, the length of hospital stay and the rate of no recovery (proportion of patients with no symptomatic resolution at the end of study).

Quality assessment

The risk of bias was assessed using the revised Cochrane Risk of Bias tool (RoB 2.0). 13 A rating of low risk of bias, some concerns or a high risk of bias was assigned to each study using five domains: randomisation process, deviations from intended interventions, missing outcome data, measurement of the outcome and selection of reported result.

Data analysis

We conducted our meta-analysis using RevMan V.5.4 with risk ratio (RR) and mean difference (MD) as the effect measures for categorical and continuous variables, respectively. We used a random-effects model as we anticipated our included studies to be substantially heterogeneous. We evaluated heterogeneity using the χ 2 test, the I 2 statistic and the tau 2 estimate. We used the Cochrane Handbook for Systematic Reviews of Intervention to interpret the values of the I 2 statistic. 14 We conducted a subgroup analysis for our primary outcome on the basis of the study population (hospitalised vs non-hospitalised patients). In addition, we conducted a sensitivity analysis on our primary outcome by excluding trials that used colchicine in combination with another intervention. For outcomes with data from 10 studies or more, we assessed publication bias by constructing funnel plots and running Egger’s test for funnel plot asymmetry.

Patient and public involvement

Search results and study characteristics.

A total of 23 RCTs (28 249 participants) were eligible for inclusion in our meta-analysis. 15–37 The details of the screening process are presented in figure 1 .

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PRISMA 2020 flow chart. PRISMA, Preferred Reporting Items for Systematic Reviews and Meta-Analyses.

17 RCTs were conducted in hospitalised patients, 4 evaluated outpatients only 17 21 22 30 and 1 RCT included both hospitalised and non-hospitalised patients. 26 Most of the trials had small sample sizes while the RECOVERY trial was the largest RCT with 11 340 patients. 23 The trials employed a variety of colchicine regimens and most were open-label that used standard of care as the comparator. Two RCTs combined colchicine with other treatments; one with rosuvastatin 25 and the other with herbal phenolic monoterpene. 33 The characteristics of each RCT are summarised in online supplemental table 3 .

Risk of bias assessment

According to RoB 2.0, 7 studies were at a low risk of bias, 1 had a high risk of bias and 12 had some concerns about bias ( figure 2 ). The most common source of bias was lack of blinding and deviations from protocol while some trials also had issues in the randomisation process.

Quality assessment of included trials.

Results of the meta-analysis

Primary outcome.

Our analysis, considering 25 824 patients from 20 RCTs, failed to find a statistically significant reduction in the risk of mortality with colchicine use (RR 0.99; 95% CI 0.93 to 1.05; p=0.78; I 2 =0%; figure 3 ). The Egger’s test indicated that publication bias was present (p=0.002; online supplemental figure 1 ). The results were consistent (P interaction =0.59) among both hospitalised (RR 0.98; 95% CI 0.90 to 1.06; p=0.64; I 2 =5%) and non-hospitalised patients (RR 0.82; 95% CI 0.43 to 1.55; p=0.54; I 2 =0%; online supplemental figure 2 ).

Effect of colchicine on all-cause mortality in patients with COVID-19.

Sensitivity analysis by excluding two studies that used combination therapies in the intervention group, 25 33 produced results consistent with our main analysis (RR 1.00; 95% CI 0.94 to 1.06; p=0.88; I 2 =0%). The results remained congruous with our primary analysis after performing a second sensitivity analysis excluding studies with a high risk of bias or some concerns about bias in the domain of deviations from intended interventions (RR 0.97; 95% CI 0.88 to 1.06; p=0.46; I 2 =3%).

Secondary outcomes

There were no significant differences between the colchicine and control groups in the incidence of MV (RR 0.75; 95% CI 0.48 to 1.18; p=0.22; I 2 =40%; 8 RCTs, 13 262 participants; online supplemental figure 3 ), risk of ICU admission (RR 0.77; 95% CI 0.49 to 1.22; p=0.27; I 2 =0%; 6 RCTs, 961 participants; online supplemental figure 3 ), risk of hospital admission (RR 0.74; 95% CI 0.48 to 1.16; p=0.19; I 2 =70%; 3 RCTs, 8572 participants; online supplemental figure 4 ), length of hospital stay (MD −0.70 days; 95% CI −2.30 to 0.89 days; p=0.39; I 2 =90%; 8 RCTs, 1028 participants; online supplemental figure 5 ) and the rate of no recovery (RR 0.77; 95% CI 0.56 to 1.05; p=0.10; I 2 =77%; 5 RCTs, 13 109 participants; online supplemental figure 6 ).

To the best of our knowledge, this is the largest and most up-to-date meta-analysis to assess the effectiveness of colchicine for COVID-19. The results of this meta-analysis suggest that colchicine does not have a significant effect on the risk of mortality in patients with COVID-19. There was also no significant benefit of colchicine in reducing the risk of MV, ICU admission, hospital admission or improving recovery rates.

Colchicine’s regulation of the inflammatory response has been proposed as a means to inhibit the inflammation caused by COVID-19. The primary mechanism by which colchicine affects cells is through the inhibition of microtubule polymerisation, which has a ripple effect on various cellular functions such as maintaining cell shape, signalling, cell division, migration and transport. 11 38 Additionally, colchicine modulates the synthesis of inflammatory cytokines such as tumour necrosis factor (TNF), interleukin-1 (IL-1) and interleukin-6 (IL-6) and disrupts the activation of inflammasomes, neutrophil adhesion and recruitment. 11 38 Given that COVID-19 is characterised by excessive inflammation and a cytokine response, colchicine’s anti-inflammatory effects may have the potential to improve outcomes.

Our results are consistent with some of the previous meta-analyses which also demonstrated no significant clinical benefit of colchicine in COVID-19 patients. 39–43 On the other hand, the meta-analyses by Zein and Raffaello and Golpour et al 44 45 found that colchicine use was associated with a reduction in the risk of mortality, and Kow et al demonstrated a shorter duration of hospital stay with colchicine. 46 However, the meta-analysis by Zein and Raffaello and Golpour et al also incorporated observational studies, which increases the likelihood of confounding bias in their findings. 44 45 Additionally, all of the previous meta-analyses included a small number of RCTs with most including less than or equal to 11. 47 Conversely, our meta-analysis pooled results from 23 RCTs, therefore, including a significantly greater cumulative sample size and substantially increasing the confidence in our estimates.

A recent umbrella review found that exposure to colchicine was associated with reduced mortality. 47 However, this discrepancy can be explained by the fact that it pooled estimates from meta-analyses instead of primary studies. Since there is a significant overlap in the included studies between the prior meta-analyses, pooling meta-analysed effect sizes leads to erroneous and flawed results due to double-counting of outcome data. The correct approach would be to synthesise data from the primary studies to provide valid estimates. 48

It is worth noting that despite including a large number of RCTs, the results of our meta-analysis are still greatly influenced by the RECOVERY trial. 23 The RECOVERY trial is by far the largest trial of colchicine which found no clinical benefit of colchicine in COVID-19 patients. However, this was a very late-stage treatment RCT with the median time from symptom onset to treatment initiation being 9 days. It is well recognised that late initiation of therapy might result in decreased effectiveness of antivirals. 49 Therefore, early treatment (within 5 days of symptom onset or at an early stage of the disease) with colchicine might prove to be beneficial for COVID-19 patients; however, this needs to be investigated in future RCTs as all of the currently available RCTs evaluated late-stage treatment.

Some limitations of our meta-analysis should be noted. The quality of the RCTs included in the meta-analysis was mixed, with 9 being of high quality, 1 being of low quality and 13 having some concerns about bias. This may have affected the reliability of the results. Additionally, there was significant interstudy heterogeneity in the overall analysis of some outcomes, such as length of hospitalisation. Our results may not be generalisable to the usage of colchicine early in the course of the disease as most RCTs are of late-stage treatment; consequently, there was not enough data to compare early-stage versus late-stage treatment. Furthermore, the composite endpoint of death or MV is an important outcome; however, due to a lack of data provided by the RCTs, we were unable to analyse this endpoint. Moreover, many studies either did not report the vaccination status of their participants or included unvaccinated patients only. Therefore, the COVID-19 vaccination status as a potential effect modifier needs to be studied further. Finally, there was evidence of the presence of publication bias in our meta-analysis implying that small studies that did not report positive findings may not have been published.

The results of this meta-analysis do not support the use of colchicine as a treatment for reducing the risk of mortality or improving other clinical outcomes in patients with COVID-19. However, RCTs investigating early treatment with colchicine (within 5 days of symptom onset or in patients with early-stage disease) are needed to fully elucidate the potential benefits of colchicine in this patient population.

Ethics statements

Patient consent for publication.

Not applicable.

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Supplementary materials

Supplementary data.

This web only file has been produced by the BMJ Publishing Group from an electronic file supplied by the author(s) and has not been edited for content.

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HAC and UJ are joint first authors.

HAC and UJ contributed equally.

Contributors Conception and design of study: HAC, AS, KYL and UJ; acquisition of data: MU, MAN and HAC; data analysis and/or interpretation: SS, RS, UJ, AHH and WM; drafting or writing of the manuscript: MAN, UJ, SS, MU, AS and WM; substantial revision or critical review of the manuscript: HAC, AHH, RS and KYL; guarantor: HAC. All authors have approved the final version of the manuscript.

Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

Competing interests None declared.

Patient and public involvement Patients and/or the public were not involved in the design, or conduct, or reporting, or dissemination plans of this research.

Provenance and peer review Not commissioned; externally peer reviewed.

Supplemental material This content has been supplied by the author(s). It has not been vetted by BMJ Publishing Group Limited (BMJ) and may not have been peer-reviewed. Any opinions or recommendations discussed are solely those of the author(s) and are not endorsed by BMJ. BMJ disclaims all liability and responsibility arising from any reliance placed on the content. Where the content includes any translated material, BMJ does not warrant the accuracy and reliability of the translations (including but not limited to local regulations, clinical guidelines, terminology, drug names and drug dosages), and is not responsible for any error and/or omissions arising from translation and adaptation or otherwise.

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Remdesivir (RDV) was the first Food and Drug Administration (FDA)-approved medication for COVID-19, with discordant data on efficacy in reducing mortality risk and disease progression. In the context of a dynamic and rapidly changing pandemic landscape, the utilization of real-world evidence is of utmost importance. The objective of this study is to evaluate the impact of RDV on patients who have been admitted to two university referral hospitals in Italy due to COVID-19. All patients older than 18 years and hospitalized at two different universities (Bari and Palermo) were enrolled in this study. To minimize the effect of potential confounders, we used propensity score matching with one case (Remdesivir) and one control that never experienced this kind of intervention during hospitalization. Mortality was the primary outcome of our investigation, and it was recorded using death certificates and/or medical records. Severe COVID-19 was defined as admission to the intensive care unit or a qSOFAscore ≥ 2 or CURB65scores ≥ 3. After using propensity score matching, 365 patients taking Remdesivir and 365 controls were included. No significant differences emerged between the two groups in terms of mean age and percentage of females, while patients taking Remdesivir were less frequently active smokers (p < 0.0001). Moreover, the patients taking Remdesivir were less frequently vaccinated against COVID-19. All the other clinical, radiological, and pharmacological parameters were balanced between the two groups. The use of Remdesivir in our cohort was associated with a significantly lower risk of mortality during the follow-up period (HR 0.56; 95% CI 0.37–0.86; p = 0.007). Moreover, RDV was associated with a significantly lower incidence of non-invasive ventilation (OR 0.27; 95% CI 0.20–0.36). Furthermore, in the 365 patients taking Remdesivir, we observed two cases of mild renal failure requiring a reduction in the dosage of Remdesivir and two cases in which the physicians decided to interrupt Remdesivir for bradycardia and for QT elongation. Our study suggests that the use of Remdesivir in hospitalized COVID-19 patients is a safe therapy associated with improved clinical outcomes, including halving of mortality and with a reduction of around 75% of the risk of invasive ventilation. In a constantly changing COVID-19 scenario, ongoing research is necessary to tailor treatment decisions based on the latest scientific evidence and optimize patient outcomes.

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Introduction.

According to the latest WHO data (August 7th, 2023), more than 780 million cases of SARS-CoV2 infection have been reported globally, and almost 7 million deaths related to the disease have been recorded since the appearance of the virus in the world scenario 1 .

Although a complete vaccination course is still considered highly effective in preventing hospitalization and severe forms 2 , several studies have reported reduced vaccine effectiveness in subjects, especially those infected with Omicron variants or immunocompromised ones 3 , 4 , 5 . Even now, pharmacological approaches remain crucial to reducing disease progression.

Remdesivir (RDV) was the first Food and Drug Administration (FDA) approved medication for COVID-19 in October 2020 for use in hospitalized adults and pediatric patients 6 due to antiviral activity against SARS-CoV-2, inhibiting viral RNA-dependent RNA polymerases due to active nucleoside triphosphate (GS-443902) 7 . It has also previously been known as a possible therapy against filoviruses (Ebola viruses, Marburg virus), previous coronaviruses (SARS-CoV, MERS-CoV), paramyxoviruses, and pneumoviridae 8 , 9 , 10 .

Since the first phase of the pandemic administration of Remdesivir has seen many changes in terms of timing 11 , counter-indications 12 , and association with monoclonal antibodies or oral antivirals 13 , 14 , 15 , 16 .

There is a notable discrepancy in the available data about the utilization of Remdesivir. Multiple studies have demonstrated that Remdesivir generally decreases the duration of recovery without impacting mortality rates, the necessity for mechanical ventilation 17 , 18 , or the improvement of patients with moderate-to-severe COVID-19 who require oxygen therapy 19 , 20 .

However, this positive effect was not observed in patients requiring high-flow oxygen therapy. Conversely, alternative findings have indicated that Remdesivir can lead to a decrease in hospitalization duration, disease progression, and overall survival rates 21 , 22 , 23 .

As shown for other interventions 24 , the utilization of real-world evidence is of utmost importance in the context of a dynamic and rapidly changing pandemic landscape. This evidence plays a critical role in customizing therapeutic approaches, taking into account factors such as vaccination status and risk profiles. Additionally, it aids in clarifying the effectiveness of various treatments, thereby facilitating informed decision-making across diverse populations and clinical contexts.

The objective of this study is to evaluate the impact of RDV on patients who have been admitted to two university referral hospitals in Italy owing to COVID-19. This be achieved by employing a propensity score-matched methodology, which aims to minimize the influence of confounding variables and bias.

Materials and methods

Study population.

All patients with more than 18 years and hospitalized in Internal Medicine or Geriatrics Wards from March 2020 to September 2022 in the University Hospital (Policlinico) ‘P. Giaccone’ in Palermo, Sicily, Italy 1 and in the University Hospital Policlinico (Bari, Italy) were enrolled in this study. The study conducted in Palermo was approved by the Local Ethical Committee during the session of the 28th of April 2021 (number 04/2021) and in Bari 28 April 2020 (Study Code: 6357).

All methods were performed in accordance with the relevant guidelines and regulations (Declarations of Helsinki). Informed consent/consent to participate was obtained from each participant and/or their legal guardian(s) who received information verbally and read the information letter.

Exposure: Remdesivir

Remdesivir was administered intravenously in: a. patients hospitalized for pneumonia due to COVID-19, needing non-invasive ventilation; b. patients having some comorbidities (e.g., type 2 diabetes, cancer) that can increase the risk of severe COVID-19 forms. These indications follow the national guidelines available at the time of inclusion 2 . According to local protocol, all the patients received 200 mg of Remdesivir on the first day, followed by 100 mg once daily for the subsequent 9 days, 4 days, or 2 days as a maintenance dose, for a total of 10, 5, or 3 days of treatment. All the patients received the first dose of Remdesivir within the first three days of disease. Since patients having severe renal (creatinine clearance < 30 ml/min) or hepatic failure (ALT > 5x) cannot take Remdesivir, they were excluded from the analyses. Finally, we also recorded potential side effects due to this medication.

Outcomes: mortality and severe COVID-19

Mortality was the primary outcome of our investigation and it was recorded using death certificates and/or medical records 3 . Severe COVID-19 was defined as admission to intensive care unit, or a qSOFAscore ≥ 2 or CURB65scores ≥ 3. Briefly, the qSOFA (quick SOFA) is made by three different items, i.e., altered mental status, respiratory rate > 22, systolic blood pressure less than 100 mmHg, with a score over two indicating a higher risk due to sepsis 16 . The CURB-65 (Confusion, Urea, Respiratory rate, Blood pressure, and age over 65 years) is used for estimating mortality associated with pneumonia: a score of 3 or more indicates severe forms of pneumonia 17 .

Confounders

For a better understanding of the association between the use of Remdesivir and the outcomes of interest, we included several factors, such as:

Demographic characteristics, including age, gender, and smoking status.

Comorbidities, including hypertension, dyslipidemia, type two diabetes mellitus, and obesity. These medical conditions were diagnosed using medical history, drug history, and laboratory measures recorded in the first four days of hospitalization.

Signs and symptoms typical of COVID-19, such as fever, anosmia, etc. (including the presence of pneumonia) recorded at hospital admission.

Other therapies, including the use of corticosteroids, heparins, and/or monoclonal antibodies.

Statistical analysis

To minimize the effect of potential confounders, we used a propensity score matching with one case (Remdesivir) and one control that never experienced this kind of intervention during hospitalization. Since some factors (namely, smoking status, hypertension, obesity and diabetes) were not balanced between cases and controls, we added as covariates in our analyses.

Data on continuous variables were normally distributed according to the Kolmogorov–Smirnov test and therefore reported as means and standard deviation values (SD) for quantitative measures and percentages for the categorical variables, by use or not of Remdesivir. Levene’s test was used to test the homoscedasticity of variances and, if its assumption was violated, Welch’s ANOVA was used. P values were calculated using the Student’s T-test for continuous variables and the Mantel–Haenszel Chi-square test for categorical ones.

The association between the use of Remdesivir and mortality during the follow-up was made using a Cox’s regression analysis and reporting the findings as hazard ratios (HRs) with their 95% confidence intervals (95% CI). In these analyses, we included vaccination against COVID-19 as covariate since unbalanced despite the use of Remdesivir and significantly associated with the outcomes of interest. To test the robustness of our results, we made several sensitivity analyses analyzing the interaction Remdesivir by the factors included (e.g., dose and duration of Remdesivir treatment, gender, presence of any comorbidity, COVID-19 clinics and the use of other therapies). In the case of age, we used the median value (= 56 years) for dichotomizing this variable. Finally, the association between Remdesivir use and the use of non-invasive ventilation during hospitalization or severe COVID-19 was analyzed using a logistic binary regression analysis, with the data reported as odds ratios (ORs) with 95% CI.

All analyses were performed using the SPSS 26.0 for Windows (SPSS Inc., Chicago, Illinois). All statistical tests were two-tailed and statistical significance was assumed for a p-value < 0.05.

Ethical approval statement and consent to participate

The study conducted in Palermo was approved by the Local Ethical Committee during the session of the 28th of April 2021 (number 04/2021) and in Bari 28 April 2020 (Study Code: 6357).

Informed consent was obtained from each participant and/or their legal guardian(s) that received information verbally and read the information letter.

The initial cohort included a total of 1883 patients hospitalized for COVID-19. Of them, 1070 used Remdesivir during the hospital stay. The 1070 participants taking Remdesivir differed in several clinical characteristics compared to the 813 controls, particularly regarding comorbidities and the presence of pneumonia radiologically identified (p < 0.0001 for all the comparisons). Therefore, a propensity score matching was proposed for better accounting of these baseline differences.

After using a propensity score matching, 365 patients taking Remdesivir and 365 controls were included. The majority of the patients used Remdesivir for ten days (n = 216), followed by 5 days (n = 126) and 3 days (n = 23). Table 1 shows the baseline characteristics. No significant differences emerged between the two groups in terms of mean age and percentage of females, whilst patients taking Remdesivir were less frequently active smokers (p < 0.0001). Regarding comorbidities, whilst no differences emerged for the presence of any comorbidity (p = 0.21), patients using Remdesivir were less significantly affected by hypertension and type 2 diabetes (p = 0.03 for both comparisons) or obesity (p = 0.005). Regarding COVID-19 symptomatology, we observed significant differences between Remdesivir and control groups in terms of anosmia and dysgeusia, both more frequent in the control group and fever more frequent in the Remdesivir group (Table 1 ). Moreover, the patients taking Remdesivir were less frequently vaccinated against COVID-19. All the other clinical, radiological, and pharmacological parameters were balanced between the two groups.

During a median follow-up time of 15 days (range 0 to 172), 58 patients (= 7.9% of the initial population) died, 490 (= 67.1%) used a non-invasive ventilation, and 571 (n = 78.2%) had a severe COVID. Table 2 shows the association between the use of Remdesivir and the outcomes of interest of our study. The use of Remdesivir, in our cohort, was associated with a significantly lower risk of mortality during the follow-up time (HR 0.56; 95% CI 0.37–0.86; p = 0.007), as also graphically reported in Fig.  1 . Moreover, the use of Remdesivir was associated with a significantly lower incidence of a non-invasive ventilation (OR 0.27; 95% CI 0.20–0.36), but not with severe COVID (OR 1.09; 95% CI 0.78–1.52) (Table 2 ).

figure 1

Association between use of Remdesivir and mortality during the follow-up period. In red patients taking Remdesivir, in blue controls. The analyses were made after matching using a propensity score our sample.

To test the robustness of our results, we did run several sensitivity analyses. Among all the factors analyzed, the use of Remdesivir decreased mortality in patients with dyslipidemia (HR 0.19; 95% CI 0.06–0.64) (p for interaction = 0.02) and in those having a SpO2 < 92% at the hospital admission (HR 0.30; 95% CI 0.11–0.81; p = 0.02) (p for interaction = 0.02). The interaction Remdesivir by other factors included did not reach the statistical significance (p for interaction > 0.05).

Finally, in the 365 patients taking Remdesivir, we observed two cases of mild renal failure requiring a reduction in the dosage of Remdesivir and two cases in which the physicians decided to interrupt Remdesivir for bradycardia and for QT elongation.

This study aimed to assess the efficacy of Remdesivir on clinical outcomes within a cohort of 712 patients admitted to the hospital due to COVID-19.

Our results demonstrate a robust correlation between the utilization of Remdesivir and positive outcomes in individuals hospitalized for COVID-19. Specifically, those who underwent Remdesivir treatment exhibited a nearly 50% reduction in the risk of mortality.

Our results diverge from other published evidence. Specifically, a recent meta-analysis indicates no association between the use of Remdesivir and a reduction in mortality risk 25 , 26 , supporting evidence from other authors that there is no impact of RDV on mortality risk 27 .

A major limitation of these studies, however, is that they did not consider timing of Remdesivir prescription from symptom onset 28 , which demonstrated to be a key driver of drug effectiveness and is today listed as a prescriptive criteria in the drug package insert 29 and in all major international guidelines 30 , 31 .

In our study, all patients received the intervention drug within 3 days from symptom onset. Furthermore, another factor that could have influenced the difference in mortality is population heterogeneity in terms of clinical and demographic characteristics. In our study, utilizing propensity score analysis, two groups exhibit substantial overlap in numerous demographic aspects (age, gender) and clinical features (comorbidities, vaccination status, pneumonia, illness severity, oxygen saturation), as well as co-therapies (corticosteroids, heparin, monoclonal antibodies, and oral antivirals).

Moreover, in our population, the use of Remdesivir was associated with a reduction in disease progression with a lower incidence of non-invasive ventilation, with a reduction in these risks of almost 75%. This data is already discussed and well noted in other literature, confirming the hypothesis that Remdesivir mitigates the severity of the disease and reduces the need for aggressive respiratory support in hospitals 11 , 12 , 32 .

If we consider that the group taking Remdesivir was less frequently vaccinated for SARS-CoV-2, our conclusion about the efficacy of Remdesivir is much stronger. This is relevant in the light of evidence that places RDV as a drug with pan-variant activity, as shown in molecular surveillance studies 33 , 34 .

Regarding safety, we observed a low incidence of adverse events following the administration of RDV. We reported two cases in which modest renal failure necessitated dosage reduction, while in two other cases, bradycardia and QT prolongation led to discontinuation of Remdesivir. Although these adverse events are cause for concern, the overall safety profile of Remdesivir in our cohort appears to be acceptable. Furthermore, recent evidence among adverse effects of Remdesivir administration suggests that there is no association between acute kidney injury (AKI) and Remdesivir 16 ; causes of AKI during Remdesivir administration could be attributed to the underlying SARS-CoV-2 infection 35 , 36 .

Overall, our study proved that Remdesivir is a well-tolerated treatment with rare adverse reactions, as demonstrated in other studies 37 .

We recognize some possible limitations to our study. As a retrospective observational study, it is susceptible to selection bias and unmeasured confounding variables. However, to overcome and address potential differences between the two groups (those receiving regimens with Remdesivir versus standard treatment), we conducted a propensity score analysis. This analytical approach effectively mitigates some biases due to the observational nature of the study 21 . The inclusion of a balanced comparison group aids in the generation of a more precise assessment of treatment effects by accounting for confounding variables 21 .

Second, the study was limited to a cohort of hospitalized COVID-19 patients, and the results may not be directly pertinent to other patient populations, including outpatients. Thirdly, the relatively small sample size and potential variation in treatment protocols across centers may limit the applicability of our findings. Finally, we could not use the Severe COVID Prediction Estimate (SCOPE) 38 scores due to a lack of data on Interleukin 6 (IL-6) in several patients and the WHO COVID-19 severity classification to standardize outcomes.

In conclusion, our study suggests that the use of Remdesivir in hospitalized COVID-19 patients is associated with improved clinical outcomes, including halving of mortality and with a reduction of around 75% of the risk of invasive ventilation. These results are crucial, especially in a period when COVID-19 research is mostly focused on the management of high-risk patients and immunocompromised ones 39 , 40 , 41 in greater need of effective therapies that reduce the risk of disease progression and mortality.

Additional real-life studies are required to confirm these findings and better comprehend all the potential benefits and hazards of Remdesivir in various patient subgroups, including the potential impact on COVID-19 sequelae 42 , 43 . In fact, with the constantly changing COVID-19 scenario, ongoing research is necessary to tailor treatment decisions based on the latest scientific evidence and optimize patient outcomes.

Data availability

The datasets used and/or analyzed during the current study are available from the corresponding author on reasonable request.

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This research was partially supported by EU funding within the NextGeneration EU-MUR PNRR Extended Partnership initiative on Emerging Infectious Diseases (Project no. PE00000007, INF-ACT).

Author information

These authors contributed equally: Nicola Veronese, Francesco Di Gennaro and Luisa Frallonardo.

Authors and Affiliations

Department of Precision and Regenerative Medicine and Ionian Area (DiMePRe-J), Clinic of Infectious Diseases, University of Bari “Aldo Moro”, Piazza Giulio Cesare N. 11 Cap, 70124, Bari, Italy

Francesco Di Gennaro, Luisa Frallonardo, Roberta Papagni, Giuseppina De Iaco, Nicolò De Gennaro, Gaetano Brindicci, Davide Fiore Bavaro, Carmen Rita Santoro, Fabio Signorile, Flavia Balena, Eugenio Milano, Deborah Fiordelisi, Michele Fabiano Mariani, Andrea Procopio, Rossana Lattanzio, Giacomo Guido, Francesco Vladimiro Segala & Annalisa Saracino

Geriatrics Section, Department of Internal Medicine, University of Palermo, Palermo, Italy

Nicola Veronese, Stefano Ciriminna, Luca Carruba, Diletta Agnello, Giuseppina Di Franco, Liliana Naro, Angelo Rizzo, Maria Chiara Garlisi, Pasquale Mansueto, Lydia Giannitrapani, Anna Licata, Laura Vernuccio, Simona Amodeo & Mario Barbagallo

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Contributions

NV FDG conceptualized and designed the study, DA GDF LN MCG RL GDI FS LG participated in data collection, extraction and interpretation. NV prepared tables and figures, performed the statistical analysis. LF GG RP drafted the initial manuscript, approved the final manuscript as submitted and agreed to be accountable for all aspects of the work in ensuring that questions related to the accuracy or integrity of any part of the work are appropriately investigated and resolved, MFM PM EM DF FB AL AS SC reviewed and revised the manuscript. All authors have contributed to the review and enhancement of the quality of this paper and have reviewed and approved the final version of the manuscript. All authors take full responsibility for the integrity of the work, and have given their approval for this final version to be published.

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Correspondence to Luisa Frallonardo .

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info covid tours 37

After a Year on Pause, Group Tours Are Back—And Already Selling Out

By Shannon McMahon

U.S. Group Tour Companies Are Reopening for Summer Travel. Zion National Park Utah USA.

All products featured on Condé Nast Traveler are independently selected by our editors. However, when you buy something through our retail links, we may earn an affiliate commission.

Travelers looking for a pod to travel alongside this summer are in luck: group tour operations in the United States and beyond are returning after a year on pause due to the coronavirus pandemic. Operators are beginning to announce full resumptions of their U.S. departures, both international and domestic, as well as expanded U.S. domestic offerings, as vaccinations ramp up for Americans. And as some tourism-dependent destinations welcome inoculated American travelers back, some tour companies are even restarting their international trips.

Tour companies Tauck and EF Go Ahead Tours , both of which offer guided trips across all seven continents, announced last week their departures would return this April and May, respectively. Intrepid Travel and REI Adventures have also broadened their U.S. domestic offerings for this summer to appeal to those not yet ready to leave the country for a getaway. Tauck has already begun its resumption of group departures via trips to Georgia and South Carolina, with New Orleans tours to follow; the company expects all of its U.S. tour offerings to be running again by July 1. On the international front, EF’s Go Ahead is planning international departures to Costa Rica and Iceland beginning in May, with its U.S. National Parks offerings also resuming next month.

Some returning tours have already been through test runs: Tauck’s decision to restart its U.S. offerings was determined following the success of several January and February departures of its Yellowstone in Winter itinerary.

“Guests told us they loved their tours, and their positive feedback proved conclusively that we can deliver a true Tauck-level experience while still following all of the appropriate health and safety protocols,” Tauck CEO Dan Mahar said in a statement.

The U.S. has seen faster vaccination rates than other popular destinations like Europe, despite the recent reopening of Greece to vaccinated Americans and plans for France to do the same this summer. Tauck, which is resuming only its U.S. tours, surveyed customers and found that 95 percent of respondents were already at least partially vaccinated against the coronavirus.

To meet that increased demand stateside, REI and Canada/Australia-based Intrepid Travel are expanding their U.S. offerings. Following a 28 percent spike in domestic-trip interest, REI Adventures has launched 19 new itineraries, including a seven-day Capitol Reef & Escalante Hiking and a six-day Arches & Canyonlands Hiking trip. Intrepid’s U.S. options now include a Zion ranch stay and an Alaska adventure , both of which sold out for February 2021 and prompted more departures for each to be added for the remainder of the year.

Tour operators are also enacting health protocols to reduce the risk of travelers getting COVID-19, including smaller group sizes, required pre-trip testing, and social distancing measures throughout the journey, although measures vary from company to company. Assistance for those who do test positive are also increasingly being included in bookings: For example, Go Ahead’s Covid Care Promise guarantees included support for any quarantine meals, lodging, translation needs, and health services if and when any traveler tests positive for COVID-19 abroad.

The strategy to avoid that scenario? Creating small, COVID-free pods. Group limits that typically reached anywhere from a dozen to more than 40 travelers, depending on the company, are being scaled down. Go Ahead's previous group size of up to 38 has been slashed to 10 to 22 travelers; G Adventures , which has group departures scheduled for late April, previously capped at 12 to 16 travelers, but will no longer group more than 12 participants. Exodus Travels , which has scheduled departures for this summer, also reduced its group size to cap departures at 10 travelers or fewer.

These size caps are likely why tours are selling out fast: EF reports that many near-term Go Ahead trips are sold out, with demand for late-2021 tours mounting now. Booking early is the solution for most people with vaccinations scheduled and a return to travel in mind for the busy summer months.

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Tour Operators Reignited by Vaccinated Seniors Restless to Travel

Rashaad Jorden, Skift

April 27th, 2021 at 1:30 AM EDT

Older travelers represent an enormously lucrative market. And as more are getting vaccinated, tour operators are rushing to accommodate them in a welcome sign for one of travel's hardest-hit sectors.

Rashaad Jorden

During the last several months, countless tour operators have resumed tours, conducting business much differently than prior to the pandemic with fewer guests, social distancing, and health screening requirements.

While those businesses were among those hardest hit by the pandemic, widespread vaccinations are assisting them in welcoming back an important market: older travelers itching to travel again.

A UK study tells that story—77 percent of older respondents to a recent 2021 survey by Silver Travel Advisor , a website devoted to travel by those over 50, said they plan to book travel within six months of being vaccinated. Furthermore, 86 percent said they would spend as much or more on travel in the next year while adding they missed overseas travel even more than hugging their grandchildren.

Those older travelers are incredibly valuable in the travel industry. In the United Kingdom alone, people older than 50 represent just below 60 percent of the country’s travel and tourism spend —in fact, $3 billion (£2.2 billion) more than millennials. Travelers in that age group are responsible for more than a third of all bed-night stays by British visitors.

And in recent months, many over the age of 50 have been booking trips in large numbers.

Numerous tour operators have seen increased bookings by such travelers—like the women-only Wild Terrains , for whom women older than 55 served as the driving force for 40 percent of the jump in bookings from the previous year for trips starting as soon as May.

And Quasar Expeditions , a Galapagos Islands-based cruise operator, is receiving inquiries for travel from June onward largely from guests older than 65 . Seventy percent, in fact—a figure 30 percent more than in previous years.

All the while, tours operators remain fastidious with precautions despite the vaccinations.

“The steps we take (such as training all tour leaders and crew in Covid-19 safety protocols and adjusting itineraries to avoid crowded locations) to ensure our trips keep everyone safe apply to all demographics,” said Matt Berna, the managing director of North America for Intrepid Travel , which is slated to launch next year its Intrepid Premium project with older travelers in mind.

Likewise, Kensington Tours —a senior-friendly tour company—is also following regulations it has established. “We’ve implemented stringent protocols in each destination to ensure that all guides and drivers are in good health while assisting our travelers, that all vehicles are well sanitized, and that social distancing can be maintained during tours,” said the company’s senior vice president of marketing, Shahla Lalani.

Meanwhile, in Australia, Encounter Travel has decided to adopt a safety-first mantra in regards to limiting the risks of Covid-19. The company’s tours outside of the country have been shelved due to “the extremes experienced by other countries” pertaining to the virus, said Justine Waddington, the Sydney-based company’s founder and director. “All our tours operate under Covid-safe practices defined by government standards that have been derived from medical professionals,” she said.

In the same boat, Explore Worldwide has decided to heed the advice of medical experts. “If the FCDO (Britain’s Foreign, Commonwealth and Development Office) recommends against travel to a destination, we will not operate a trip there—and customers will have the chance to change their booking or request a refund,” said Sam White, the company’s North American director. “Similarly, if the State Department or the Canadian government advises changes to that country, customers will have the option to change their booking or request a refund.”

info covid tours 37

Seniors among those on tour in Jordan. Source: Explore Worldwide.

So it’s clear what general steps tour operators have been taking to keep their guests safe. But such businesses are grappling with another crucial question: Should guests be required to get vaccinated? Well, opinions on the topic diverge.

Christopher Heppner, the senior director of communications at Road Scholar —a tour operator specializing in educational excursions for older travelers—is firmly in the camp of mandatory vaccinations. “Having our entire group vaccinated makes the experience more worry-free for everyone,” he stated. “While mask wearing will still be promoted on programs, if everyone is vaccinated we may be able to take a more relaxed approach in certain situations when the group is alone together.”

info covid tours 37

Louis-Gabriel Bideau, group leader, for Road Scholar conducting a tour in the Latin Quarter of Paris. Source: Road Scholar.

Intrepid Travel has enacted similar guidelines as Intrepid requires vaccinated travelers to produce proof of vaccination as part of the mandatory pre-trip health screening. But those who have not been vaccinated or who have only partially completed the process, “must provide proof of a negative Covid test within 72 hours before the first day of their trip,” Intrepid’s Berna said

Furthermore, “travelers aged 70-plus years or anyone with an existing health condition that puts them at a higher risk of Covid-19 infection must be vaccinated to join a trip,” he added.

On the other hand, Ivan Shirokov takes a laissez-faire attitude on the topic. “We believe it is up for the traveler to decide if he/she wants to be vaccinated,” said the chief commercial officer of Firebird Tours . “As a company, we should not require that. Instead, we will ensure that we provide full support and service to our travelers based on their specific situation and requirements.”

“However,” he added, “it is likely that for one to two years, if you want to travel, you will need to get a vaccine or recover from a virus. Most likely countries will permit travelers if they a) have been vaccinated, b) have recovered from a virus and have antibodies or c) take PCR tests on departure/arrival.”

Encounter Travel’s Waddington shared similar views. “I don’t believe it’s our place to mandate the standards around tour participation and vaccination,” she stated. “That said, there may be a future when the majority of travelers are pro-vaccination, and they drive the demand for creating a mandate for vaccination for us.”

So after settling the issue of whether to vaccinate guests or not, tour operators specializing in excursions for older travelers must prepare themselves to welcome a larger number of guests again.

A larger number of guests? Yes, numerous representatives have echoed the point made by respondents in surveys conducted by Silver Travel Advisor: older travelers are buzzing with excitement about exploring the world again.

“As more people are getting vaccinated, 60-plus are the prime interest group who are actively planning their trips,” Firebird Tours’ Shirokov said. “As soon as the borders reopen, we expect to see a wave of travelers going, primarily 60-plus.”

Shirokov also believes the tendency of older travelers to get vaccinated bodes well for their travel plans. “In the post-Covid era, it might be the older travelers who are permitted to explore different countries, ahead of the younger travelers,” he added. “That is because they are already vaccinated and are good to go.”

Road Scholar’s Heppner has also seen older travelers exhibit enormous interest in getting back on the road. “We recently mailed our first catalog in nearly a year, and we’re already seeing many programs fill to capacity,” he stated as Road Scholar will resume on-site educational travel programs in July (the company has offered online learning adventures since last summer).

Waddington can be counted as another one envisioning a boom in bookings. “There’s a good chance that we will experience a bigger surge in tour booking compared to general companies because we cater exclusively for solo travelers,” she said. “This long-lasting pandemic has left solo travelers that live alone feeling more isolated than ever; long periods of lockdowns and lack of travel opportunities. Where families or couples may take off for a short road trip together, solo travelers often don’t have the same opportunities, as many are not wanting to go alone.”

The director of Encounter Travel cited her company’s location, which has been relatively successful in combatting Covid-19 as a significant reason why it is poised to rebound. “As Australia has largely been insulated from the levels of devastation from the virus experienced by other countries, its likely visitors from around the world will see Australia as the safe haven from the virus,” Waddington stated, which is a development she feels will entice over 50 year olds from outside the country to join their tours.

She also feels the communal nature of Encounter Travel’s excursions will boost the psyche of her older guests. “Where families or couples may take off for a short road trip, solo travelers don’t have the same opportunities, as many are not wanting to go alone,” she added. “They join our groups to enjoy the benefits of sharing their travels with other solo travelers.”

Enjoying travel … something that so many people haven’t been able to do for a long time. So when Heppner said, “When we get back on the road this summer, it will be a reunion unlike any other,” those are apropos words.

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Tags: intrepid travel , seniors , tour operators

Photo credit: A group of senior enjoying a tour from Road Scholar in Paris, a scene surely to be replicated in the months ahead as vaccinated baby boomers hit the road Road Scholar

Morning Rundown: Tucker Carlson and Trump blamed for Ukraine aid delay, National Enquirer admits making up Ted Cruz father story, loose horses run amok in London

Capitol tours resume after 2 years Covid hiatus

WASHINGTON — The U.S. Capitol will reopen to the public on Monday for guided tours for limited groups of people who have registered in advance, congressional officials said, two years after the coronavirus pandemic prompted the cessation of such visits.

Officials said that the resumption would occur in phases, beginning on Monday for school groups and other groups of up to 15 people who would be led by lawmakers or their aides. Congressional offices would each be limited to leading one tour weekly.

The move, announced Wednesday, marked Congress’ latest relaxation of Covid-19 restrictions as Washington, D.C., and the world struggle to return to normalcy as the omicron variant wave wanes in the U.S. Mask requirements inside the Capitol were relaxed weeks ago in a gradual easing that has been colored by politics, with Republicans pushing for more aggressive easing of restrictions than Democrats.

A health screening form for all visitors was being “recommended," according to the statement by House Sergeant at Arms William J. Walker and Brian P. Monahan, the Capitol's attending physician.

The Capitol Visitor Center, an adjacent underground complex that has exhibits and a restaurant, would tentatively reopen to limited numbers of visitors on May 30, officials said.

Walker and Monahan said the renewed tours would be monitored with an eye to revamping the new restrictions if needed. They also said they would be guided by how widespread COVID-19 is in the Washington area.

“We appreciate your continued patience and cooperation as we work together to resume public tours of the Capitol for the American people in a way that protects the health and safety of visitors and institutional staff alike,” they wrote.

The two officials said the decision to renew limited tours was made by congressional leaders, the Capitol's medical and visitors services staff, the U.S. Capitol Police and the board that oversees that force.

In normal times, around 3 million people visit the Capitol every year.

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info covid tours 37

Stop COVID Cohort: An Observational Study of 3480 Patients Admitted to the Sechenov University Hospital Network in Moscow City for Suspected Coronavirus Disease 2019 (COVID-19) Infection

Collaborators.

  • Sechenov StopCOVID Research Team : Anna Berbenyuk ,  Polina Bobkova ,  Semyon Bordyugov ,  Aleksandra Borisenko ,  Ekaterina Bugaiskaya ,  Olesya Druzhkova ,  Dmitry Eliseev ,  Yasmin El-Taravi ,  Natalia Gorbova ,  Elizaveta Gribaleva ,  Rina Grigoryan ,  Shabnam Ibragimova ,  Khadizhat Kabieva ,  Alena Khrapkova ,  Natalia Kogut ,  Karina Kovygina ,  Margaret Kvaratskheliya ,  Maria Lobova ,  Anna Lunicheva ,  Anastasia Maystrenko ,  Daria Nikolaeva ,  Anna Pavlenko ,  Olga Perekosova ,  Olga Romanova ,  Olga Sokova ,  Veronika Solovieva ,  Olga Spasskaya ,  Ekaterina Spiridonova ,  Olga Sukhodolskaya ,  Shakir Suleimanov ,  Nailya Urmantaeva ,  Olga Usalka ,  Margarita Zaikina ,  Anastasia Zorina ,  Nadezhda Khitrina

Affiliations

  • 1 Department of Pediatrics and Pediatric Infectious Diseases, Institute of Child's Health, Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia.
  • 2 Inflammation, Repair, and Development Section, National Heart and Lung Institute, Faculty of Medicine, Imperial College London, London, United Kingdom.
  • 3 Soloviev Research and Clinical Center for Neuropsychiatry, Moscow, Russia.
  • 4 School of Physics, Astronomy, and Mathematics, University of Hertfordshire, Hatfield, United Kingdom.
  • 5 Biobank, Institute for Regenerative Medicine, Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia.
  • 6 Institute for Regenerative Medicine, Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia.
  • 7 Chemistry Department, Lomonosov Moscow State University, Moscow, Russia.
  • 8 Department of Polymers and Composites, N. N. Semenov Institute of Chemical Physics, Moscow, Russia.
  • 9 Department of Clinical and Experimental Medicine, Section of Pediatrics, University of Pisa, Pisa, Italy.
  • 10 Institute of Social Medicine and Health Systems Research, Faculty of Medicine, Otto von Guericke University Magdeburg, Magdeburg, Germany.
  • 11 Institute for Urology and Reproductive Health, Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia.
  • 12 Department of Intensive Care, Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia.
  • 13 Clinic of Pulmonology, Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia.
  • 14 Department of Internal Medicine No. 1, Institute of Clinical Medicine, Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia.
  • 15 Department of Forensic Medicine, Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia.
  • 16 Department of Statistics, University of Oxford, Oxford, United Kingdom.
  • 17 Medical Research Council Population Health Research Unit, Nuffield Department of Population Health, University of Oxford, Oxford, United Kingdom.
  • 18 Centre for Tropical Medicine and Global Health, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom.
  • 19 Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital, Oxford, United Kingdom.
  • 20 Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia.
  • PMID: 33035307
  • PMCID: PMC7665333
  • DOI: 10.1093/cid/ciaa1535

Background: The epidemiology, clinical course, and outcomes of patients with coronavirus disease 2019 (COVID-19) in the Russian population are unknown. Information on the differences between laboratory-confirmed and clinically diagnosed COVID-19 in real-life settings is lacking.

Methods: We extracted data from the medical records of adult patients who were consecutively admitted for suspected COVID-19 infection in Moscow between 8 April and 28 May 2020.

Results: Of the 4261 patients hospitalized for suspected COVID-19, outcomes were available for 3480 patients (median age, 56 years; interquartile range, 45-66). The most common comorbidities were hypertension, obesity, chronic cardiovascular disease, and diabetes. Half of the patients (n = 1728) had a positive reverse transcriptase-polymerase chain reaction (RT-PCR), while 1748 had a negative RT-PCR but had clinical symptoms and characteristic computed tomography signs suggestive of COVID-19. No significant differences in frequency of symptoms, laboratory test results, and risk factors for in-hospital mortality were found between those exclusively clinically diagnosed or with positive severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) RT-PCR. In a multivariable logistic regression model the following were associated with in-hospital mortality: older age (per 1-year increase; odds ratio, 1.05; 95% confidence interval, 1.03-1.06), male sex (1.71; 1.24-2.37), chronic kidney disease (2.99; 1.89-4.64), diabetes (2.1; 1.46-2.99), chronic cardiovascular disease (1.78; 1.24-2.57), and dementia (2.73; 1.34-5.47).

Conclusions: Age, male sex, and chronic comorbidities were risk factors for in-hospital mortality. The combination of clinical features was sufficient to diagnose COVID-19 infection, indicating that laboratory testing is not critical in real-life clinical practice.

Keywords: COVID-19; Russia; SARS-CoV-2; cohort; mortality risk factors.

© The Author(s) 2020. Published by Oxford University Press for the Infectious Diseases Society of America. All rights reserved. For permissions, e-mail: [email protected].

Publication types

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  • Research Support, Non-U.S. Gov't
  • Hospitalization
  • Middle Aged

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Moscow partially shuts down as Russia sees record COVID cases

Moscow shuts down non-essential services for 11 days to fight the surge in COVID-19 infections.

info covid tours 37

Russia has reported record numbers of daily COVID-19 cases and deaths as Moscow shut down non-essential services for 11 days to fight the surge in infections.

The country hardest-hit in Europe by the pandemic, Russia has struggled with low vaccination rates despite developing several of its own jabs.

Keep reading

Nato agrees new plan to deter russian attacks, russian agency behind solarwinds still targeting us: microsoft, energy crunch: russia could reap windfalls as other nations reel.

Recent weeks have seen daily numbers of cases and deaths hit the highest of the pandemic, with the official government tally on Thursday reporting new records of 40,096 infections and 1,159 fatalities in the past 24 hours.

Authorities have shied away from the kind of severe lockdowns imposed in many countries, but have shut down all non-essential services in the capital, Moscow, from Thursday until November 7.

Retail outlets, restaurants, and sporting and entertainment venues are all closed, along with schools and kindergartens. Only shops selling food, medicine and other essentials are allowed to remain open.

Vaccinations lagging

President Vladimir Putin’s government has been pinning its hopes on homegrown vaccines like the Sputnik V jab, but Russians have proven stubbornly resistant to being inoculated.

As of Thursday, only 32 percent of Russia’s population had been fully vaccinated, according to the Gogov website, which tallies COVID-19 data.

info covid tours 37

Putin last week ordered a nationwide paid holiday between October 30 and November 7 in a bid to reverse rising infections, and Moscow authorities followed suit by ordering the shutdown of non-essential services in the capital from Thursday.

Roads in Moscow on Thursday morning were slightly less congested than usual, but the city’s sprawling Metro network was as busy as ever, with many passengers not wearing masks.

Authorities have not required Russians to stay at home during the non-working period and many were planning to use the days to travel across the country and abroad.

The mayor of the Black Sea resort city of Sochi has warned of a huge influx of tourists, and demand in Russia for flights bound for Turkey and Egypt has soared.

Downplaying pandemic

Russia has recorded totals of nearly 8.4 million cases and more than 235,000 deaths, though independent experts say authorities have downplayed the severity of the pandemic.

Figures published by statistics agency Rosstat in October suggest that more than 400,000 people have died in the country from the coronavirus.

After a severe months-long lockdown early in the pandemic, Russian authorities have been hesitant to impose further restrictions that would hurt the economy, instead urging Russians to get vaccinated.

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    COVID-19 Data. Monitoring the impact of COVID-19 and the effectiveness of prevention and control strategies remains a public health priority. CDC continues to provide sustainable, high-impact, and timely information to inform decision-making. COVID Data Tracker.

  11. Colchicine for the treatment of patients with COVID-19: an updated

    Objectives We conducted an updated systematic review and meta-analysis to investigate the effect of colchicine treatment on clinical outcomes in patients with COVID-19. Design Systematic review and meta-analysis. Data sources We searched PubMed, Embase, the Cochrane Library, medRxiv and ClinicalTrials.gov from inception to January 2023. Eligibility criteria All randomised controlled trials ...

  12. Real life experience on the use of Remdesivir in patients ...

    Severe COVID-19 was defined as admission to the intensive care unit or a qSOFAscore ≥ 2 or CURB65scores ≥ 3. After using propensity score matching, 365 patients taking Remdesivir and 365 ...

  13. After a Year on Pause, Group Tours Are Back—And Already Selling Out

    Tour operators are also enacting health protocols to reduce the risk of travelers getting COVID-19, including smaller group sizes, required pre-trip testing, and social distancing measures ...

  14. Travel Policy Update

    Travel Policy Updates For Our Guests. Health & Safety Policy for 2024. For 2024 tours and cruises, Tauck has no remaining Covid requirements. There is no vaccination requirement or travel pledge to be signed. This 2024 policy could change if there is a surge in infection rates or other factors that could impact the safety of our guests and ...

  15. Tour Operators Reignited by Vaccinated Seniors Restless to Travel

    A UK study tells that story—77 percent of older respondents to a recent 2021 survey by Silver Travel Advisor, a website devoted to travel by those over 50, said they plan to book travel within ...

  16. Capitol tours resume after 2 years Covid hiatus

    The move, announced Wednesday, marked Congress' latest relaxation of Covid-19 restrictions as Washington, D.C., and the world struggle to return to normalcy as the omicron variant wave wanes in ...

  17. Getting COVID while on group tour

    Mar 16, 2024. See All Senior Travel Conversations. Senior Travel. Answer 1 of 27: I would like to hear experiences of others who got COVID while travelling on a group tour. Gate 1 Travel recently kicked me off a trip immediately after I reported a positive self-test. A senior traveling solo, I was left at a lodge in a rural area...

  18. How Globus Brands Are Helping Travel Advisors Navigate COVID-19

    Globus Offers Peace of Mind With Its COVID-19 Policies. Benefits of this program's coverage include arranging all necessary on-trip COVID-19 tests; Globus-paid testing for the return trip home (when needed); a backup plan (or Plan "See") in case of closures or barriers to planned trip activities; travel protection that covers COVID-19-related on-trip expenses; and the continued ...

  19. Smithsonian Journeys Health & Safety Protocols

    Tour Staff. Your Smithsonian Journeys Experts and travel directors are required to adhere to the same health and safety protocols as outlined for guests. Tour staff will also receive additional training on health and safety measures to support you during your tour. Accommodations and Meals. All hotels and lodges on our trips maintain a high ...

  20. COVID-19

    COVID-19 information and questions, and help with appointments for testing or vaccination (Mon-Fri, 8 a.m.-5 p.m.) County Activity and Recommendations. The national Centers for Disease Control and Prevention (CDC) recommend protective steps against COVID-19 based on the level of COVID-19 activity in your county. See the latest recommended ...

  21. Abstract

    Information on the differences between laboratory-confirmed and clinically-diagnosed COVID-19 in real-life settings is lacking. Methods We extracted data from the medical records of adult patients who were consecutively admitted for suspected COVID-19 infection in Moscow, between April 8 and May 28, 2020.

  22. Stop COVID Cohort: An Observational Study of 3480 Patients ...

    Information on the differences between laboratory-confirmed and clinically diagnosed COVID-19 in real-life settings is lacking. Methods: We extracted data from the medical records of adult patients who were consecutively admitted for suspected COVID-19 infection in Moscow between 8 April and 28 May 2020.

  23. Travel & Health Info

    Your travel investment is secure with Tauck's comprehensive Travel Protection Plans - before, during, and after your trip. Complete details of the many benefits and outstanding coverage provided by the plans are explained inside. Our commitment of keeping our guests safe and secure has always been of paramount importance at Tauck. As we ...

  24. Moscow partially shuts down as Russia sees record COVID cases

    Rus­sia ex­ceeds 1,000 dai­ly COVID deaths for first time An of­fi­cial tal­ly also showed 33,208 new in­fec­tions, a high for fa­tal­i­ties and cas­es for the third day in a row ...

  25. Coronavirus in Russia: The Latest News

    The country's coronavirus task force confirmed 141,883 new Covid-19 infections over the past 24 hours and 678 fatalities. Feb. 1 — Russia reported more than 100,000 new coronavirus cases for ...