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
- NCT04276896RecruitingPhase 1/Phase 2
COVID-19 Synthetic Minigene Vaccine Trial
This trial tests a new type of COVID-19 vaccine called a synthetic minigene vaccine. It is for people with a recent COVID-19 infection (within the past 7 days) to see if the vaccine is safe and helps the immune system fight the virus.
Shenzhen, GuangdongAges 6 months–80 years - NCT04320732Recruiting
Study COVID-19 spread at home and work
This study looks at what factors make COVID-19 spread more easily in the community and workplace. It may help researchers understand how to reduce transmission in everyday settings.
OsloAges 18 years+ - NCT04330521Recruiting
Cancer patients share experiences during the COVID-19 outbreak
This study asks adult cancer patients to complete a survey and talk in an interview about how COVID-19 affected their care and daily life. Your answers may help researchers understand what challenges cancer patients faced during the pandemic.
Stanford, CaliforniaAges 18–99 - NCT05233605Recruiting
Study sedative effects on ongoing brain inflammation after severe COVID
This study looks at whether a specific ICU sedative (dexmedetomidine) affects long-term inflammation in the brain after severe COVID with ARDS and deep sedation. It uses PET and MRI scans and special tracers to understand persistent inflammation and why it may last.
ParisAges 18–74 - NCT05271669Recruiting
Study of COVID-19 immunity over time
This study looks at how people’s immune protection after COVID-19 may change over time. It aims to better understand immunity, which could help doctors plan future care and prevention.
Hong Kong, HONG KONGAges Any age - NCT05774093Recruiting
Study how COVID immunity affects reinfection risk
This study looks at how well COVID-19 protection (immune barrier) holds up over time and how likely people are to get reinfected. It may help researchers understand who is more at risk after prior infection and why.
Guangzhou, GuangdongAges Any age - NCT06006884Recruiting
Understanding long-term lung effects after COVID-19
This study looks at why some people develop long-term lung problems after COVID-19. It compares people who had severe COVID-19 and were hospitalized to those who had mild infections and recovered at home.
Rochester, MinnesotaAges 18 years+ - NCT06274840Recruiting
COVID-19 antibodies in cystic fibrosis
This study looks at how the body makes antibodies (proteins that fight infection) against COVID-19 in people with cystic fibrosis. It helps doctors understand how well your immune system responds to the virus or vaccine.
LisbonAges Any age - NCT06381739RecruitingPhase 2
New inhaled COVID-19 booster vaccine trial
This trial tests a next-generation COVID-19 vaccine given as an inhaled mist. It is for adults who have already had at least 3 doses of an mRNA COVID vaccine and are looking for a potentially stronger or longer-lasting immune response.
Halifax, Nova ScotiaAges 18–65 - NCT05369611Enrolling by invitation
Share your COVID-19 experiences in a long-term study
This study asks people already enrolled in the NIEHS SELF cohort to answer a questionnaire about their COVID-19 experiences. Your answers can help researchers understand how COVID-19 affected people in this group.
Bethesda, MarylandAges 23–35 - NCT06864156Recruiting
Molecules and vitamin levels in long COVID with brain fog
This study looks at certain molecules (called microRNAs) and vitamin B12 levels in people who have ongoing brain-related symptoms like depression, anxiety, or fatigue after a COVID-19 infection. It may help understand why some people have long-lasting symptoms and could lead to better treatments.
Mexico City, Mexico CityAges 18–65 - 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 - NCT05212792Recruiting
Study genes after COVID vaccine side effects
This study looks at genetic information to better understand why some people develop serious side effects after a COVID-19 vaccine, such as GBS, blood clotting with low platelets (VITT/TTS), or heart inflammation (myocarditis/pericarditis). Your information may help researchers learn who is at higher risk and improve future safety.
Vancouver, British ColumbiaAges 5–99 - NCT05822193Recruiting
Study of long COVID in Brazil
This study looks at how often “post-COVID-19 condition” (long COVID) happens, what factors are linked to it, and how much it affects people’s daily lives. It may help researchers better understand long COVID and who is most impacted.
Cachoeirinha, Rio Grande do SulAges 18 years+ - NCT06608849Recruiting
Long-term health effects after COVID-19
This study looks at how COVID-19 may affect the lungs, heart, and kidneys in the months or years after the infection. It compares three groups: people who never had COVID, people who had COVID but recovered without organ problems, and people who had organ problems during COVID. The goal is to understand what long-term complications might arise.
AthensAges 18 years+ - NCT07076862RecruitingEarly Phase 1
PET scan study for long COVID symptoms
This study uses a special PET scan to look at inflammation in the body of people with long COVID (symptoms lasting 3+ months after infection). The goal is to understand why symptoms persist and find better ways to help.
Sacramento, CaliforniaAges 18 years+ - NCT05566392Recruiting
Studying long-term recovery in children after COVID-19
This study looks at how long “long COVID” affects children over time. It may help doctors better understand what symptoms last and what support could improve recovery.
TaipeiAges 6–18 - NCT06672692Recruiting
Study of a new test for flu, RSV, and COVID-19 in people with symptoms
This trial evaluates a new test that can detect flu A/B, RSV, and COVID-19 from a single nose swab. It is for people who are currently sick with respiratory symptoms and are either hospitalized, in the ER, visiting a clinic, or living in a long-term care facility.
Henderson, NevadaAges Any age - NCT06829940Recruiting
Baduanjin exercise for long COVID fatigue
This trial tests whether Baduanjin, a gentle mind-body exercise, can help people under 50 with long-standing chronic fatigue that's worse after COVID-19. It aims to see if this safe, low-impact practice improves energy and daily life without needing extra treatments.
CairoAges 18–50 - NCT05463380Recruiting
Study of hospitalized adults with COVID-19
This study follows adults who are in the hospital (including the emergency ward) with a confirmed COVID-19 infection. It aims to learn how COVID-19 affects people in the hospital and how different cases may differ over time.
DüsseldorfAges 18 years+ - NCT05587894RecruitingPhase 2
Testing optimized COVID antiviral treatment in immunocompromised adults
This study tests the best combination and timing of antiviral medicines for people with COVID-19 who have weakened immune systems. It aims to improve outcomes in people with mild to moderate illness.
Bordeaux, BordeauxAges 16 years+ - NCT06191302Recruiting
Long COVID study in Denmark
This study follows people who were hospitalized for COVID-19 to learn more about long-term health effects (post-COVID conditions). It uses blood samples already collected during their hospital stay.
HvidovreAges 18 years+ - NCT06825819Recruiting
Dysbiosis and long COVID study
This study looks at gut bacteria changes in people with and without long COVID symptoms after a confirmed COVID infection. It may help find why some people have long-term health problems.
Chicago, IllinoisAges 18–80 - NCT06614309Recruiting
Non-invasive treatment for brain fog from long COVID
This study tests a non-invasive treatment to help with brain fog caused by long COVID. It may improve your symptoms if you have trouble thinking clearly or focusing.
Scottsdale, ArizonaAges 18 years+
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.