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 175 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- 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+ - 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+ - 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+ - 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+ - 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 - NCT06255626RecruitingPhase 1/Phase 2
New COVID-19 booster vaccine study
This trial tests a new type of COVID-19 booster vaccine that targets a protein to help your immune system. It's for people who already had a primary vaccine series and at least one mRNA booster, with the last booster at least 6 months ago.
CréteilAges 18–84 - NCT06865222Recruiting
Magnetic brain stimulation for lingering COVID symptoms
This study tests whether a special type of magnetic stimulation (called TMS) can help with lingering symptoms after COVID-19, such as loss of smell, ringing in the ears, or fatigue. The treatment is safe and non-invasive, using a magnet placed near your head.
Rochester, MinnesotaAges 18–65 - NCT06876948Recruiting
Long COVID brain effects in children
This study looks at brain and nerve problems in children and teens who had COVID-19. It uses brain scans and other tests to understand long-lasting symptoms like headaches, tiredness, memory issues, or dizziness.
Pisa, PIAges 6–16 - NCT05261139RecruitingPhase 3
Trial for PF-07321332 for children at risk from COVID-19
This trial studies whether PF-07321332 (with ritonavir) helps children under 18 who have COVID-19 at home but are at high risk of severe illness. It looks at whether starting treatment early can reduce progression to worse disease.
Phoenix, ArizonaAges birth–17 years - NCT05458440Recruiting
Study using immune cells from recovered COVID-19 donors
This study collects immune cells from people who recovered from COVID-19 and may use them to boost protection against SARS-CoV-2. It’s for hospitalized patients who already show a certain level of COVID-19 fighting immune response.
Vandœuvre-lès-Nancy, LorraineAges 18–70 - NCT06667700RecruitingPhase 3
A study of the antiviral molnupiravir for high-risk people with COVID-19
This study tests an antiviral pill called molnupiravir to see if it can prevent severe COVID-19 in people who are at high risk and cannot take Paxlovid. If you have mild to moderate COVID-19 symptoms and certain health risks, you may be able to join.
Cullman, AlabamaAges 18 years+ - NCT06883513Recruiting
Osteopathic therapy for long COVID symptoms
This trial tests if gentle hands-on treatment (osteopathic manipulative therapy) can help relieve long-lasting COVID symptoms like fatigue, brain fog, and body pain.
Louisville, KentuckyAges 18 years+ - NCT07464314RecruitingPhase 1
Testing a combined flu and COVID-19 mRNA vaccine in older adults
This trial is testing whether a new mRNA vaccine that targets both seasonal flu and COVID-19 is safe and creates a strong immune response. It may offer an easier way to protect against two illnesses with one shot.
Anniston, AlabamaAges 65–85 - NCT07157007RecruitingPhase 2
Testing a New COVID-19 Drug for Mild to Moderate Cases
This trial tests a new drug, ratutrelvir, for people with mild to moderate COVID-19. It aims to find a safe and effective dose to help you feel better faster.
Charlestown, New South WalesAges 18 years+ - NCT04746183RecruitingPhase 1/Phase 2
Early trial testing treatments for COVID-19 in the first days
This early-stage study tests COVID-19 treatments in people who have recently developed symptoms and who test positive for the virus. It aims to find safer, more effective options for preventing worsening disease, especially in higher-risk groups.
Cape TownAges 18 years+ - 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 - NCT06810934RecruitingPhase 1/Phase 2
New COVID-19 vaccine study for those with prior mRNA vaccines
This study tests a new type of COVID-19 vaccine that is designed to train your immune system to make stronger, longer-lasting protection. You may be able to join if you are 40–64, have already had at least two doses of a mRNA COVID-19 vaccine (Pfizer or Moderna) more than 4 months ago, and are generally healthy.
Los Angeles, CaliforniaAges 40–64 - NCT06160128Recruiting
COVID-19 treatment outcomes in veterans
This study looks at how well different COVID-19 treatments work in Veterans. By reviewing health records, researchers hope to find which medications help the most.
Portland, OregonAges 18 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+ - NCT07197164RecruitingPhase 2
Remdesivir for kidney transplant patients with mild COVID-19
This trial tests whether giving remdesivir to kidney transplant patients who test positive for COVID-19 can prevent them from getting severely ill. It is for people who have already had at least three COVID-19 vaccine doses and are scheduled to receive a kidney transplant soon.
Badalona, BarcelonaAges 18 years+
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Common questions
- Are there clinical trials for covid-19 infection?
- Yes. Clin2 currently lists 175 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.