Clinical trials
COVID clinical trials
Below are recruiting covid clinical trials, each written for real people, not researchers. We’re tracking 337 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT05046002Recruiting
COVID vaccine heart inflammation symptom registry
This study is a “registry,” meaning it collects medical information about people who develop possible heart inflammation after a COVID-19 vaccine. It may help doctors understand how often this happens and which findings are linked to it.
Ottawa, OntarioAges 5 years+ - NCT04959734Recruiting
Study of COVID-19 effects on emergency visits for infant lung infections
This study looks at how the COVID-19 era changed emergency department visits for young children with breathing problems, such as bronchiolitis or first-time viral wheeze. It may help doctors understand trends in these illnesses and plan better care during outbreaks.
LeicesterAges birth–2 years - NCT04956445Recruiting
Donate blood and mucus samples to study virus treatments
This study collects samples from people who currently have, recently had, or may have been exposed to common respiratory viruses. The goal is to use these samples to develop and test future countermeasures (like treatments) against COVID-19 and other viruses.
New Orleans, LouisianaAges 6 months–120 years - NCT04952870Recruiting
Study breathing treatment and early immunity in newborns after COVID
This study looks at how newborns’ bodies are affected by COVID-19 around birth and whether a breathing support treatment (inhaled nitric oxide) changes outcomes. It also compares COVID-exposed babies and a similar group of babies without COVID who are not receiving the breathing treatment.
LilleAges Up to 3 months - NCT04444128Recruiting
Testing heart risk assessment using MRI T1 mapping
This study checks whether an MRI heart scan measure called “T1 mapping” can improve how doctors estimate heart disease risk in everyday people. You may join if you’re an adult and can have a contrast-enhanced heart MRI safely.
Frankfurt am Main, HesseAges 18 years+ - NCT04896606RecruitingPhase 1/Phase 2
Matched donor immune therapy for mild to moderate COVID-19
This early-phase study tests immune cells from a matched family donor (made to target the COVID-19 virus) to see if they can help people with mild-to-moderate COVID-19 who are hospitalized and at higher risk for getting sicker. It aims to check safety first and also look for signs of benefit.
Valhalla, New YorkAges 18–65 - 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+ - NCT04705766Enrolling by invitation
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+ - 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+ - 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 - NCT04579588Recruiting
Study flu vaccine immunity in people after COVID-19
This study looks at how well your immune system (your body’s infection-fighting system) responds to a flu vaccine after you’ve had COVID-19. It may help doctors understand why some people have different protection after vaccines.
Palo Alto, CaliforniaAges 9–64 - NCT04391816Recruiting
Study of how alcohol use changed during the COVID-19 pandemic
This study follows people over time to understand how the COVID-19 pandemic affected alcohol use and related health or behaviors. You may help by answering short surveys by phone or online on a regular schedule.
Bethesda, MarylandAges 18–100 - NCT04429594Recruiting
Study tracking COVID-19 infection rates in the public
This study looks at how often SARS-CoV-2 (the virus that causes COVID-19) infection happens in people who may have been exposed in the community. It may help researchers understand infection rates and patterns in the general population.
NiceAges 18 years+ - NCT04381936RecruitingPhase 3
Testing COVID-19 or pneumonia treatments in hospitalized patients
This trial tests different treatments for serious lung infections in people who are already in the hospital. It may help doctors learn which treatment works best for recovery and survival when pneumonia-like illness is suspected.
BrusselsAges birth+ - NCT04484025Enrolling by invitationPhase 2
Study of an oral drug for hospitalized COVID-19 patients
This trial tests an oral drug called SPI-1005 for people hospitalized with moderate COVID-19. The drug may help reduce inflammation and protect the lungs, and the study will compare it to a placebo (a pill with no active medicine) to see if it helps people recover.
New Haven, ConnecticutAges 18 years+ - NCT04326426Enrolling by invitationPhase 3
Study of tradipitant for severe or critical COVID-19
This trial tests whether tradipitant can improve outcomes for adults with severe or critical COVID-19, including pneumonia and low oxygen. It may help patients whose lungs are significantly affected and who need careful hospital-level care.
New York, New YorkAges 18–90 - NCT04369599Enrolling by invitation
Test chest vibration during ventilation for severe lung failure
This study looks at whether a special chest “vest” and related lung measurements can improve breathing in people with sudden severe lung failure who need a breathing machine. You may be eligible if you have ARDS and can safely use the vest during mechanical ventilation.
Atlanta, GeorgiaAges 18 years+ - NCT04327570Recruiting
Study of immune responses in hospitalized COVID-19 patients
This study looks closely at how your immune system responds during COVID-19. It may help researchers better understand why COVID-19 varies from person to person and how to improve future care.
LeuvenAges 18 years+ - NCT04278404Recruiting
Drug safety study for children already on certain medicines
This study measures how certain medicines move through the body and checks their safety in children. It may help doctors better understand dosing and side effects in kids who are already receiving these treatments, or in some kids who recently tested positive for COVID-19.
Phoenix, ArizonaAges birth–20 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 - NCT04318366Recruiting
Study of COVID-19 samples and how patients respond to treatment
This trial collects and studies COVID-19 test results and other patient information to better predict treatment response and outcomes. Your sample(s) help researchers understand who may improve, worsen, or need different care.
Milan, LombardyAges 18 years+ - NCT01073475Recruiting
Pregnancy and birth registry for community health research
This trial is a long-term registry that collects pregnancy and birth information in a community to help researchers study maternal and newborn health. It may help you and others by improving understanding of care and outcomes across many pregnancies.
Birmingham, AlabamaAges Any age - NCT03830320RecruitingPhase 1
PET scan to look for blood clots in the heart or lungs
This Phase 1 study uses a PET scan to detect blood clots (thrombosis) in specific groups of people. It’s testing how well the scan can find clots and how it should be timed with other heart or illness tests.
Boston, MassachusettsAges 18–85 - NCT01306084Recruiting
Study of viral infections in healthy and immune-compromised people
This trial studies how viruses affect the body, and how the immune system responds, in both healthy people and people with weakened immunity. It may include people who currently have a suspected or recent viral infection, close contacts, people around the time of a viral vaccine, and healthy adults used for comparison.
Bethesda, MarylandAges 6 months–120 years
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Common questions
- Are there clinical trials for covid?
- Yes. Clin2 currently lists 337 recruiting covid 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 covid 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 covid 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.