Clinical trials
COVID-19 clinical trials
Below are recruiting covid-19 clinical trials, each written for real people, not researchers. We’re tracking 273 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT07651761Enrolling by invitation
Vaccine Talk Training for Primary Care Doctors
This study tests whether special training helps primary care doctors have better conversations with patients about flu and COVID-19 vaccines. You may be eligible if you're a patient who visits a participating clinic during the 2026–2027 vaccine season.
Worcester, MassachusettsAges 18 years+ - NCT07610967Recruiting
Light therapy for respiratory infection protection
This study tests a mouthpiece that uses light to help the immune system fight respiratory infections. It may reduce the chance of getting sick.
Nellis Air Force Base, NevadaAges 18 years+ - NCT07597876Recruiting
COVID-19 Patient Registry and Data Collection Study
This study collects medical information from COVID-19 patients to help doctors better understand the disease and improve treatment. You'll be asked about your health history and how COVID-19 has affected you.
PaviaAges Any age - 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 - 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 - NCT06693362RecruitingPhase 1
Stem cell therapy for severe viral pneumonia
This trial tests whether injecting stem cells from the womb's blood supply can help treat severe viral pneumonia. It aims to improve recovery for people who are very sick and need hospital care.
Shanghai, Shanghai MunicipalityAges 18–85 - NCT07529197Recruiting
Study of Immunoadsorption Treatment for Post-Infectious ME/CFS
This study observes how a blood-cleaning treatment called immunoadsorption works in patients with ME/CFS (severe fatigue condition) who have specific immune markers. Researchers will track whether this treatment helps reduce symptoms and improve daily functioning.
Berlin, State of BerlinAges 18–65 - NCT07523113Recruiting
Brain Fog Treatment for ME/CFS Using Cognitive Training
This study tests whether a computerized cognitive training program combined with a mild electrical nerve stimulation device (worn on the ear) can help improve thinking and memory problems in people with ME/CFS. The goal is to see if this approach helps with brain fog and daily functioning.
Birmingham, AlabamaAges 18 years+ - NCT05943743Recruiting
Study e-learning hiccups among medical students in Pakistan
This study looks at the challenges (“hiccups and obstacles”) medical students face with e-learning. If you are an undergraduate medical student in Pakistan, you may be invited because the study focuses on your learning experience.
Karachi, SindhAges 18–25 - NCT06766279Recruiting
OMT for smell loss after COVID-19
This trial tests if osteopathic manipulative treatment (OMT) can help people regain their sense of smell after COVID-19. OMT is a hands-on therapy used by osteopathic doctors to improve body function.
Las Cruces, New MexicoAges 18 years+ - NCT05778006Recruiting
Registry for people with ME/CFS
This study is a registry, meaning it collects information from people who have ME/CFS. It helps researchers better understand ME/CFS and may guide future studies that could improve care.
Munich, BavariaAges birth+ - 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 - NCT07397455RecruitingPhase 1
COVID-19 Omicron Human Challenge Study
This study is a 'human challenge' trial where healthy volunteers who have been vaccinated and have low antibody levels are deliberately exposed to a newer Omicron variant of COVID-19. The goal is to learn how the virus spreads and how to test treatments or vaccines.
LondonAges 18–50 - NCT05623007Recruiting
Diet and gut bacteria study for vaccinated teens with COVID
This trial tests whether changing diet can shift gut bacteria in overweight or obese teens after COVID-19 vaccination. The goal is to see if dietary changes can affect health markers related to the gut and immune system.
Jakarta Pusat, DKI JakartaAges 12–17 - NCT05384509Recruiting
Tracking antibody levels in cancer patients during COVID vaccines
This study measures COVID “neutralizing” antibodies over time in people with cancer who are on different kinds of cancer treatments. It aims to understand how vaccination and treatment type affect immune protection in cancer patients.
New Taipei CityAges 20 years+ - NCT05190718Recruiting
Pharyngeal electrical stimulation for swallowing trouble after brain injury
This trial tests a non-drug therapy that uses gentle electrical stimulation to help people swallow safely when swallowing is affected by certain brain or nerve conditions. If you qualify, you may receive this approach to improve swallowing and reduce choking risk.
Tulln, Low AustriaAges 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+ - 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 - NCT07149428Recruiting
Deep study of smell loss causes using brain scans
This study uses brain imaging and electrical recordings to understand the brain's role in smell loss from any cause—like COVID, sinus problems, or chemotherapy. You may be eligible if you have any degree of smell loss lasting under a year.
Bethesda, MarylandAges 18–99 - NCT07147517Recruiting
Tracking respiratory viruses in your community and home
This study tracks how respiratory viruses spread in the community and within households. It involves testing and collecting samples from people who are sick or healthy, to help better understand and prevent outbreaks.
La Jolla, CaliforniaAges Any age - NCT05858502Recruiting
Study immune response to COVID-19 and improve testing
This study looks at how the immune system in the body responds to different COVID-19 virus variants. It may help improve how COVID-19 is diagnosed by comparing people who are currently infected and those who are not.
ParisAges 18–65 - NCT07085611Recruiting
Studying vaccine and antibody protection in adults
This trial checks how well antibodies from COVID-19 or monkeypox vaccines or treatments work in adults. It helps researchers understand your protection level.
OrléansAges 18 years+ - NCT05835102Recruiting
How nutrition measures may affect COVID-19 outcomes
This study looks at nutrition-related measurements to see how they may relate to how people with COVID-19 do over time. It may help doctors better predict who is at higher or lower risk based on nutrition status.
Chongqing, Chongqing MunicipalityAges 18–80 - NCT06848309Recruiting
Immune response study for influenza or COVID-19
This study looks at how your immune system fights off flu or COVID-19. If you have a current or recent infection, or if you've been vaccinated in the past year, you may be able to join.
St Louis, MissouriAges 18–60
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Common questions
- Are there clinical trials for covid-19?
- Yes. Clin2 currently lists 273 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.