Clinical trials
COVID clinical trials
Below are recruiting covid clinical trials, each written for real people, not researchers. We’re tracking 337 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT07861542RecruitingPhase 4
COVID-19 booster vaccine for older adults and high-risk people
This trial tests an updated COVID-19 booster vaccine designed to improve protection for people who are older or have health conditions that increase their risk of severe COVID-19. If you qualify, you would receive one dose of the study vaccine and be monitored for safety and immune response.
Fair Oaks, CaliforniaAges 12 years+ - NCT06168032Recruiting
COVID-19 vaccine for lung cancer patients
This trial is testing how well the COVID-19 vaccine works for people with lung cancer to prevent another infection. It also looks at certain biomarkers in your blood that might help predict your body's immune response.
BeijingAges 18 years+ - NCT02735707RecruitingPhase 3
Adaptive trial for severe pneumonia care in intensive care
This study tests ways to improve treatment for adults with severe pneumonia that lands them in the ICU, adjusting the plan as results come in. It may help your care team find better treatments for lung infection and breathing/heart support needs.
Jacksonville, FloridaAges 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 - NCT05218356RecruitingPhase 2
Codivir trial for hospitalized moderate COVID-19
This trial tests whether Codivir can help people hospitalized with moderate COVID-19 recover better than a placebo (inactive pill). It will compare outcomes while participants receive standard hospital care.
Paulo Prata, Barretos/SP/BRAAges 18–75 - 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 - NCT06441955RecruitingPhase 4
Long Covid prevention and health support trial
This trial tests a care program designed to help people who continue to have symptoms after recovering from COVID-19. It aims to prevent long-term health problems and improve well-being.
Bethesda, MarylandAges 18–65 - NCT07445971RecruitingPhase 1
Study of MDX2301 for healthy adults and those at higher risk for severe COVID-19
This trial tests an investigational drug called MDX2301 to see if it's safe in healthy adults and in adults who are at higher risk for severe COVID-19. Higher risk means you have conditions like asthma, diabetes, heart disease, or other listed health issues.
Las Vegas, NevadaAges 18–64 - NCT05553743Recruiting
Study of donated breast milk and how it affects child health
This study looks at breast milk donated for research and how it may relate to infant and child health. If you’re an adult who is breastfeeding and can donate extra milk, you may be able to participate.
San Diego, CaliforniaAges 18 years+ - NCT06776263Recruiting
Breathing problems after COVID-19 study
This study looks at people who have ongoing breathing issues after a COVID-19 infection. It tests a simple questionnaire to see if you have dysfunctional breathing (abnormal breathing patterns) and may help guide treatment.
Stockholm, SolnaAges 18 years+ - 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 - NCT06434701Recruiting
Severe COVID-19 in children in emergency rooms
This trial is studying children who are very sick from COVID-19 or have a related condition called MIS-C. It aims to understand how severe COVID-19 affects children and improve care.
AfulaAges birth–16 years - NCT07295483Recruiting
Long COVID 4-Year Follow-Up Study
This study follows up with people who already took part in the BioICOPER study to see how long COVID symptoms and health evolve over 4 years. If you were in that earlier study, you may join this one to help researchers learn more about long-term recovery.
Salamanca, SalamancaAges 18 years+ - NCT06927622Recruiting
COVID-19 study for pregnant women and infants
This study follows pregnant women and their babies to learn more about COVID-19 and how it affects them. By taking part, you help researchers understand the virus and improve care for mothers and children.
Jinan, ShandongAges 18 years+ - NCT07154199Recruiting
Ultrasound for brain fog after COVID-19
This trial tests if gentle ultrasound waves to the head can help clear brain fog that lasts after a COVID-19 infection. If you've had COVID and still feel mentally slow or forgetful, this treatment might help your thinking get sharper.
Beijing, Beijing MunicipalityAges 18–75 - NCT07134673Recruiting
Long COVID and cell energy study
This study looks at how cells make energy in people with Long COVID compared to people who fully recovered. It involves a blood draw, a small muscle sample, and a skin biopsy to understand why symptoms last.
Jette, Brussels CapitalAges 18 years+ - NCT05650905Recruiting
Eye and blood-vessel function study after COVID-19
This study measures how well the nerves in your retina and the tiny blood vessels in your eye “couple” (work together) after COVID-19. It may help researchers understand eye-related effects of COVID-19 and long COVID, and how these processes change over time.
Vienna, State of ViennaAges 18 years+ - NCT06968442Recruiting
Obesity and severe COVID-19 study
This study looks at how obesity affects the body's response to severe COVID-19. It compares people with obesity to healthy-weight healthcare workers to understand differences in the immune system.
Rotterdam, South HollandAges 18–65 - NCT06960928RecruitingPhase 3
Low dose sirolimus for long COVID
This trial tests if a low dose of sirolimus, a medicine that calms the immune system, can help people with long COVID. If you have had long COVID symptoms for at least 6 months, like severe fatigue, brain fog, or chest pain, you may be able to join.
New York, New YorkAges 18 years+ - NCT06928272RecruitingPhase 3
Long COVID drug study for adults 18 to 65
This study tests whether a commonly used drug (repurposed) can help improve Long COVID symptoms like fatigue, breathing problems, or brain fog. It is for adults 18 to 65 who had COVID-19 in the past 4 years and still have symptoms after 3 months.
San Diego, CaliforniaAges 18–65 - 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 - NCT06821113Recruiting
COVID-19 prevention program for Latino day laborers
This trial tests a program adapted for Latino day laborers to help prevent COVID-19. It aims to see if the program works for people who look for work at street corners.
Houston, TexasAges 18 years+ - NCT06821100RecruitingPhase 1
Thymalfasin to Boost COVID-19 Vaccine Response in Older Adults
This trial tests whether a drug called thymalfasin (thymosin alpha 1) can help older adults (65+) get a stronger immune response from their COVID-19 booster shot. It may be especially helpful for those whose immune systems have weakened with age.
Houston, TexasAges 65–100 - NCT05379556Recruiting
Study for long COVID sexual and reproductive symptoms
This study is looking at people who have recovered from COVID-19 but still have ongoing (long COVID) sexual, reproductive, or related symptoms. Researchers want to learn about these lingering problems and what may help, based on your answers and study procedures.
Naples, ItalyAges 18 years+
Hear when a new COVID trial opens
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Common questions
- Are there clinical trials for covid?
- Yes. Clin2 currently lists 337 recruiting covid 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 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 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.