Clinical trials
Immunization; Infection clinical trials
Below are recruiting immunization; infection clinical trials, each written for real people, not researchers. We’re tracking 93 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- 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 - 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 - NCT05215327RecruitingPhase 2
Higher-dose flu vaccine vs standard dose after lung transplant
This trial tests whether a higher dose of flu vaccine works better than the standard dose for people who have had a lung transplant. It may help improve protection against seasonal flu while monitoring safety.
Nashville, TennesseeAges 16 years+ - NCT05947071RecruitingPhase 2
Higher-dose flu vaccine versus standard dose in child transplant patients
This trial compares a higher-dose flu vaccine to the standard dose in children who recently received a kidney, heart, and/or liver transplant. It aims to see which dose better protects children against influenza while checking for safety.
Stanford, CaliforniaAges 3–17 - NCT07192458RecruitingPhase 2
High vs. Standard Dose Flu Vaccine in Lung Transplant
This study compares a high-dose flu vaccine to the standard dose in lung transplant recipients. It aims to see if a higher dose gives better protection against the flu.
Nashville, TennesseeAges 18 years+ - NCT00404560Recruiting
Blood tests to study infection risk and immune problems
This study looks at how the immune system works in people who have—or might have—an increased risk of infections. It also enrolls their healthy blood relatives so researchers can compare immune features; results may help doctors understand who is at higher risk and why.
Bethesda, MarylandAges 1 month–100 years - NCT01222741Recruiting
Study of people with higher risk of fungal infections
This study looks at immune system differences that can make some people get unusual or frequent fungal (fungus) infections. It may help researchers better understand these conditions, and you may be asked to store blood for future research.
Bethesda, MarylandAges 18–85 - NCT06926894RecruitingPhase 1
A cell therapy for viral infections in children and young adults
This trial tests a special immune cell treatment (R-MVST cells) for children and young adults who have had a stem cell or organ transplant and are fighting stubborn viral infections like EBV, CMV, ADV, or BK virus. The goal is to see if these cells can help control the viruses when standard medicines haven't worked well enough.
New York, New YorkAges 3 months–26 years - NCT07130799Recruiting
Monitoring immune response in severe abdominal infections with fungal risk
This trial monitors a marker of immune function (monocyte HLA-DR) in patients with severe abdominal infections that may lead to fungal infections. It aims to see if this marker can help guide treatment.
Vandœuvre-lès-NancyAges 18 years+ - NCT00006150Recruiting
Understanding Hyper-IgE Syndrome: Natural History and Genetics
This study follows people with or suspected Hyper-IgE syndrome (a rare immune disorder causing repeated infections and skin problems) to understand how the condition develops, how best to manage it, and which genes are involved. Researchers also welcome healthy relatives of patients to help identify genetic patterns.
Bethesda, MarylandAges 1 month–120 years - NCT06902194Recruiting
Kids' immune response to respiratory infections study
This study looks at how South African children's immune systems respond to acute respiratory infections. It may help find better ways to treat or prevent these infections.
Cape Town, Western CapeAges Up to 13 years - NCT06488118Recruiting
Lung response to inhaled immune stimulant in healthy and asthma
This study tests how the lungs react to breathing in a weak immune-stimulating drug (R848). It includes healthy volunteers and people with mild to moderate asthma to see differences in airway responses.
Cambridge, CambridgeshireAges 18–60 - NCT06718127Recruiting
Study of immune response to yellow fever vaccine
This study looks at how your body's immune system responds to the yellow fever vaccine. It may help researchers understand how well the vaccine protects people.
ParisAges 18–65 - NCT04419870Recruiting
Acute infections in people with mitochondrial disease
This study looks at how people with mitochondrial disease respond to acute infections like COVID-19 or the flu. It aims to understand how infections affect the body and to find better ways to care for patients.
Bethesda, MarylandAges 2 months–115 years - NCT03266653RecruitingPhase 2
T-cell therapy for stubborn Epstein-Barr virus after transplants
This trial tests an immune therapy made from EBV-targeted T-cells to treat EBV infections that do not improve with standard anti-viral medicines. It may help by strengthening the body’s ability to fight EBV after certain transplants or immune problems.
Los Angeles, CaliforniaAges 1 month–79 years - NCT07552038Recruiting
Dental Care Management for People Living With HIV
This study looks at how dentists can best care for people with HIV. Researchers will review dental and health records at hospitals in the Pays de la Loire region to understand what works best for keeping teeth and gums healthy when you have HIV.
Nantes, NantesAges 18 years+ - NCT07431840Recruiting
Immune protein for respiratory infections in older adults
This trial tests whether an immune defense protein can help reduce upper respiratory infections (like colds) in people aged 60 and older. It may be a good fit if you get colds or flu-like symptoms several times each season.
Los Angeles, CaliforniaAges 60 years+ - NCT05421325RecruitingPhase 2
Vaccine-like immune treatment to prevent lung infections in seniors
This Phase 2 study tests a site-specific immune “booster” in people age 65 and older to help improve natural immunity and reduce respiratory (lung/airway) infections. You may be eligible if you can consent, are in an eligible living situation, and are not currently using certain immune-suppressing medicines.
Burnaby, British ColumbiaAges 65 years+ - NCT03482245Recruiting
Study how body clock proteins affect immune responses in infections
This study looks at how your body’s daily “clock” proteins may influence your immune response during certain serious infections requiring hospital care. If you qualify, researchers will compare immune signals during treatment to better understand what could improve care.
St Louis, MissouriAges 18–65 - NCT04990908Recruiting
Screening children in ICU for immune problems after severe infection
This study checks children in pediatric intensive care for possible “immune system problems” after a severe infection. The goal is to find primary immunodeficiencies early, which may change follow-up and treatment for the child’s immune health.
MontpellierAges 3 months–16 years - NCT06909110RecruitingPhase 1/Phase 2
Immune cells for viral infections after transplant
This trial tests a treatment using specially trained immune cells (virus-specific T-cells) to fight stubborn infections with adenovirus, CMV, or EBV in people with weakened immune systems, such as after a stem cell or organ transplant.
Palo Alto, CaliforniaAges 1 month–65 years - NCT05859490RecruitingPhase 1/Phase 2
Yellow fever vaccine study for adults with past vaccination
This trial studies how well the yellow fever vaccine “17D” stimulates the immune system (the body’s germ-fighting response) in adults who were vaccinated with 17D years ago. It may help researchers understand whether a prior vaccination still provides protection and how strong the immune response is.
Portland, OregonAges 20–49 - NCT07128095Recruiting
Wellness and nutrition check during COVID-19
This study looks at how exercise, nutrition, and overall wellness have been affected during the COVID-19 pandemic. It may help you understand how to improve your health habits.
Bloomington, IndianaAges 18–75 - NCT07682766Recruiting
Biomarkers of inflammation and infection in critical care
This study looks at markers of inflammation, infection, and immunity in patients who are in the critical care area. It aims to find early signs of how severe the illness might become, how well treatments work, and if infections will develop.
TorinoAges 18 years+
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Common questions
- Are there clinical trials for immunization; infection?
- Yes. Clin2 currently lists 93 recruiting immunization; 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 immunization; 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 immunization; 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.