Clinical trials
COVID-19 clinical trials
Below are recruiting covid-19 clinical trials, each written for real people, not researchers. We’re tracking 305 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- 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+ - 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+ - NCT04389463Recruiting
Study of heart surgery outcomes during COVID-19
This study looks at how people do after heart or chest surgery when they test positive for COVID-19. It may help doctors understand risks and outcomes for surgical patients during the pandemic.
NantesAges 18 years+ - 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 - NCT04424992Recruiting
Observing hospitalized adults with COVID-19 lung infection
This study follows adults who are hospitalized with COVID-19 in the lungs. The goal is to better understand how COVID-19 behaves in the hospital over time.
MonzaAges 18 years+ - 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+ - NCT04443179Recruiting
Baby brain scans in England to study early development
This study does brain imaging (brain scans) in babies to better understand early brain development and how factors like family history and COVID-19 might relate to development. It may help researchers learn which babies could need extra support later.
LondonAges 16–75 - 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+ - NCT04510025Recruiting
MRI study of whole-body effects of moderate to severe COVID
This study looks at how COVID-19 affects multiple organs in the body, using MRI scans and related measurements. It may help researchers better understand who is at risk for longer-lasting or widespread effects after COVID.
OxfordAges 18–100 - 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 - 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 - 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+ - 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 - 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+ - 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+ - NCT04806620Recruiting
Online app study for brain inflammation lifestyle data
This study uses a digital platform (app/website) to collect lifestyle and symptom information to better understand brain inflammation. You may qualify if you have certain conditions like Long COVID, migraines, autoimmune disease, inflammatory gut issues, mood disorders, or if you are a healthy comparison person.
Delafield, WisconsinAges 2 years+ - 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+ - NCT04890483Recruiting
Brain stimulation to ease pain and fatigue after COVID
This study tests whether a noninvasive brain stimulation treatment can reduce fatigue and body pains after COVID in people with autoimmune diseases. It may help symptoms by changing brain activity without surgery.
São PauloAges 18–80 - 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 - NCT07536308RecruitingPhase 1
Nasal COVID-19 booster vaccine safety trial
This trial tests a new nasal spray COVID-19 booster vaccine. It aims to see if the vaccine is safe and produces a strong immune response when given through the nose and inhaled, in people who have already been vaccinated.
Decatur, GeorgiaAges 18–64
Hear when a new COVID-19 trial opens
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Common questions
- Are there clinical trials for covid-19?
- Yes. Clin2 currently lists 305 recruiting covid-19 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-19 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-19 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.