Clinical trials
COVID-19 Infection clinical trials
Below are recruiting covid-19 infection clinical trials, each written for real people, not researchers. We’re tracking 195 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- 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 - 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 - NCT06008860RecruitingPhase 4
Astepro nasal spray for early COVID-19
This trial tests whether Astepro nasal spray can help people with mild or no COVID-19 symptoms recover faster. If you have tested positive and are vaccinated, you may qualify.
Chicago, IllinoisAges 18 years+ - NCT06099795Recruiting
Breath test vs. swab test for COVID-19
This study checks if a new breath test (eBAM-CoV) can accurately detect COVID-19 compared to the usual nose/throat swab test (RT-PCR). If you have symptoms or were exposed and are getting tested anyway, you may be able to help by also providing a breath sample.
NîmesAges 18 years+ - NCT06482138Recruiting
Why smell may change after COVID-19: a nose tissue study
This study looks at why some people lose or change their sense of smell after COVID-19. Researchers will take a tiny sample of tissue from your nose to study the cells and molecules involved.
Brussels, Brussels CapitalAges 18–70 - NCT06667063Recruiting
Immune response study for COVID-19 and flu
This study looks at how your immune system responds to COVID-19 or the flu. It may help researchers understand these infections better, whether you are currently sick or healthy.
Wuhan, HubeiAges 18 years+ - NCT06503939Enrolling by invitation
Treating long COVID cough with inhaled steroids
This trial is testing if inhaled steroid medications (ICS or ICS/LABA) can help people whose cough continues long after a COVID-19 infection. It is designed for adults whose cough started after a positive COVID test and has lasted more than 8 weeks without other lung issues.
Changsha, HunanAges 18 years+ - NCT07123727RecruitingPhase 2
Testing Anktiva for long COVID symptoms
This study tests if the drug Anktiva can help people with long COVID. To join, you must have had at least one confirmed COVID-19 infection and now have lasting symptoms that started or got worse after that infection.
El Segundo, CaliforniaAges 18–70 - NCT05582512Recruiting
Study of long-term effects in children after COVID-19
This study looks at what long-term health effects children may have after getting COVID-19, and how those effects change over time. You may be asked to share health information and possibly complete a scan that can’t be done if certain metal is present.
Taipei, Chung Cheng DistrictAges Up to 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+ - 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 - 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+ - 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 - 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 - 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+ - NCT06920628RecruitingPhase 1
Brain scan study for long COVID neurological symptoms
This study uses a special PET scan to look at brain inflammation in people with neurological symptoms after COVID-19. It aims to understand how inflammation might be linked to ongoing problems like brain fog or memory issues.
Bethesda, MarylandAges 18–70 - 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 - 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+ - 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 - 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+ - 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+ - 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+ - 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
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Common questions
- Are there clinical trials for covid-19 infection?
- Yes. Clin2 currently lists 195 recruiting covid-19 infection 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 infection 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 infection 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.