Clinical trials
Covid19 clinical trials
Below are recruiting covid19 clinical trials, each written for real people, not researchers. We’re tracking 38 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT04652115RecruitingPhase 2
Defibrotide for severe COVID-19 in adults
This trial tests defibrotide to see if it improves outcomes in people hospitalized with severe COVID-19. You may be considered if you have confirmed infection, abnormal chest imaging, and meet specific severity and safety requirements.
Boston, MassachusettsAges 18–100 - NCT03188796RecruitingPhase 3
High-dose vitamin D for ICU patients with low vitamin D
This trial tests whether giving a high dose of vitamin D3 can reduce death within 28 days for critically ill adults in the ICU who have very low vitamin D levels. It may help by correcting vitamin D deficiency, which the study team thinks could affect outcomes in serious illness.
EnzenbachAges 18–100 - NCT04344912Recruiting
Study of COVID-19 effects on heart emergency care
This study looks at how the COVID-19 outbreak affected care for people admitted to the cardiac intensive care unit. It may help hospitals improve how they plan and respond during major outbreaks.
ParisAges 18 years+ - NCT04367883Recruiting
Study of flu shots and blood-pressure medicines in COVID
This study looks at people who were admitted to the hospital in Terrassa starting in March 2020. Researchers want to see whether having a flu vaccine and using certain blood-pressure medicines (ACE inhibitors or ARBs) is linked to how COVID infection develops.
Terrassa, BarcelonaAges Any age - NCT04445285RecruitingPhase 2
Test drops to thin lung mucus in severe COVID-19
This Phase 2 trial tests rhDNase (a medication similar to Pulmozyme) to improve outcomes and reduce the risk of death in people with severe COVID-19 causing breathing failure. It’s meant for adults who need high-flow oxygen or a breathing machine.
Mobile, AlabamaAges 18 years+ - NCT04525716Recruiting
Study of how COVID-19 affected surgery patients
This study looks at how the COVID-19 pandemic changed outcomes and experiences for people who had surgery in Stockholm during the study period. It may help hospitals prepare better plans for patients during future outbreaks.
StockholmAges Any age - NCT04527315Recruiting
COVID-19 survivors health registry and follow-up scans
This study enrolls adults who had COVID-19 to track longer-term health effects and match them with people who did not have COVID-19. Depending on eligibility, you may be asked to complete questionnaires and possibly have MRI or X-ray scans.
New York, New YorkAges 18 years+ - NCT04558450Recruiting
Study how COVID-19 affects blood vessel stiffness and aging
This study looks at how having COVID-19 may affect your blood vessels over the following months. It may help doctors understand long-term “vascular aging” and who is most at risk, based on how sick you were during your COVID illness.
NancyAges 18 years+ - NCT04579471Recruiting
Study COVID-19 infection in people after organ or bone marrow transplant
This study looks at how common COVID-19 (SARS-CoV-2) infection is and what outcomes happen in people who have had a transplant. It may help doctors understand what to expect and how to better support transplant patients during COVID-19.
Leuven, Vlaams BrabantAges 18–90 - NCT04586413Recruiting
Help build and study a quality-of-life tool after COVID-19
This study will collect information from adults who had COVID-19 (confirmed by a test or diagnosis) to develop and improve a questionnaire about life after infection. Your answers may help researchers better track symptoms and quality of life over time.
OxfordAges 18 years+ - NCT04606732Recruiting
Tracking heart risk changes after COVID-19 hospitalization
This study looks at how COVID-19 affects heart health over time in people who were hospitalized. Your results may help doctors predict prognosis and understand who is at higher heart risk after recovery.
BolognaAges 18 years+ - NCT04611243Recruiting
Follow-up study after hospital recovery from COVID-19
This study checks how well your lungs work and how much exercise you can do after you’ve been discharged from the hospital for COVID-19. It also measures blood (serology) results to understand recovery and possible immune response changes over time.
Hong KongAges 18 years+ - NCT04647656Recruiting
Hyperbaric oxygen for lingering post-COVID brain fog
This study tests whether breathing pure oxygen in a pressurized chamber (hyperbaric oxygen therapy) can improve long-lasting post-COVID problems with thinking and memory. It may help if your brain symptoms have lasted at least 3 months and affect your daily life.
ẔerifinAges 18 years+ - NCT04666246Recruiting
Studying breathing effort in people with COVID-19 breathing failure
This study looks at how hard people with COVID-19 are working to breathe when they have serious breathing trouble but are not yet fully on a breathing machine. The results may help doctors better understand breathing support needs and improve care.
ModenaAges 18–80 - NCT04678193Recruiting
Study to track who may get hospitalized from COVID
This trial studies COVID risk to predict who is more likely to need hospital care and to better understand how COVID spreads. It may help future patients by improving risk assessment using test results and risk scores.
Phoenix, ArizonaAges 18 years+ - NCT04705766Recruiting
Study kidney injury after recent COVID infection
This study looks at how COVID can affect the kidneys soon after infection. You may be able to participate if you recently tested positive for COVID and have not had kidney replacement treatments.
San Francisco, CaliforniaAges 18 years+ - NCT04706390Recruiting
Study compares immune response after COVID infection vs vaccination
This study looks at how your immune system responds after natural COVID-19 infection compared with after COVID vaccination. It may help researchers understand how well different experiences train the body’s defenses.
BergenAges 20–100 - NCT04736732Recruiting
Post-COVID research clinic for adults in Quebec
This study invites adults in Quebec to complete questionnaires and possibly follow-up checks about past COVID-19 infection or symptoms. It may help researchers better understand ongoing effects after COVID, or compare people with different COVID test histories.
Montreal, QuebecAges 18–100 - NCT04746183RecruitingPhase 1/Phase 2
Early trial testing treatments for COVID-19 in the first days
This early-stage study tests COVID-19 treatments in people who have recently developed symptoms and who test positive for the virus. It aims to find safer, more effective options for preventing worsening disease, especially in higher-risk groups.
Cape TownAges 18 years+ - NCT04775134Recruiting
Checking leftover COVID virus after recovery
This study looks for whether small amounts of the COVID virus are still present in the lungs after infection. It may help doctors understand how long the virus can remain and inform future care, using tissue removed during a medically needed lung procedure.
LeuvenAges 18 years+ - NCT04790240RecruitingPhase 1/Phase 2
Herbal treatment aimed to reduce COVID-19 inflammation
This early-stage trial studies whether certain medical herbs can lower inflammation in people with recent COVID-19 and help the immune system better fight the virus. You may be able to join whether or not you take standard COVID medicines, but you would need to complete the herb plan and provide specific lab and scan results.
Rockville, MarylandAges Any age - NCT04815096RecruitingPhase 2
PET scan study of immune activity after COVID-19
This Phase 2 study uses a special PET scan to look at how active your immune system is after a recent COVID-19 infection. The goal is to understand what the immune response looks like and whether this imaging approach could help guide care.
San Francisco, CaliforniaAges 18 years+ - NCT04834869Recruiting
Track safety after COVID-19 vaccination in adults
This study follows adults who have already received a COVID-19 vaccine to monitor side effects and safety over time. Your participation helps researchers understand how the vaccine affects different people who are at higher risk due to their work.
Philadelphia, PennsylvaniaAges 18 years+ - NCT04837755Recruiting
Study for COVID-19 and long COVID in Saarland
This study looks at people with current COVID-19 or symptoms lasting after COVID (called long COVID). It aims to learn more about how to care for these conditions and what to expect over time.
Homburg, SaarlandAges birth–110 years
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Covid19 trials by city
Studies with a site in or near these metro areas.
Covid19 trials by state
Studies with a site anywhere in these states.
Common questions
- Are there clinical trials for covid19?
- Yes. Clin2 currently lists 38 recruiting covid19 studies from the U.S. registry, each rewritten for real people, not researchers, so you can see what it’s testing and who it’s for.
- How do I know if I qualify for a covid19 trial?
- Each study lists its eligibility criteria — rules about age, diagnosis, and prior treatments. On every Clin2 trial page we explain these in words written for real people and offer a short, optional pre-screen for a fit read. The study team makes the final decision.
- Does it cost anything to join a covid19 trial?
- Using Clin2 is always free. Many trials cover the cost of the study treatment and related visits; some reimburse travel. The study team explains exactly what’s covered before you decide.
Related conditions
Clin2 helps you find and understand clinical trials and does not provide medical advice. Study data comes from ClinicalTrials.gov. Talk with your doctor about whether a specific trial is right for you.