Clinical trials
Vaccination clinical trials
Below are recruiting vaccination clinical trials, each written for real people, not researchers. We’re tracking 600 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- 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 - NCT06466629Recruiting
Best timing for the Tdap vaccine during pregnancy
This study tests when during pregnancy it is best to get the Tdap (whooping cough) vaccine. It aims to protect both mother and baby from whooping cough in the first months after birth.
Edegem, AntwerpAges 18 years+ - NCT06472245RecruitingPhase 3
Cancer vaccine for lung cancer that stopped responding to immunotherapy
This trial tests a therapeutic cancer vaccine called OSE2101 for people with advanced non-small cell lung cancer whose tumors stopped responding to an immunotherapy drug. The vaccine is designed to help your immune system fight the cancer in a different way.
Beverly Hills, CaliforniaAges 18 years+ - NCT06484335RecruitingPhase 1
Testing an HIV vaccine and antibody combo for treatment-free control
This study tests a combination of an HIV vaccine and an antibody infusion to see if your immune system can control HIV without daily pills. You would temporarily stop your HIV medication under close monitoring and restart if needed.
Pathum Wan, BangkokAges 18–60 - NCT06492187Recruiting
Survey to see if you qualify for infectious disease studies
This trial is a quick survey to see if you might be eligible for future infectious disease studies. It helps researchers understand your health background and find the right study for you.
Brooklyn, New YorkAges 18 years+ - NCT06495359Recruiting
Immunization education for parents of young children
This study tests whether a special education program can reduce vaccine hesitation among parents. If you have a child aged 0-6 and haven't taken immunization training before, you may be able to join.
BilecikAges Any age - NCT06513286RecruitingPhase 1/Phase 2
Therapeutic hepatitis B vaccine study using a two-part shot
This trial tests a new vaccine to treat chronic hepatitis B. It's for people who have been on antiviral medication for at least 6 months and still have a low level of the virus in their blood.
FrankfurtAges 18–70 - NCT06564623RecruitingPhase 1
Peptide vaccine plus immunotherapy for biliary tract cancer
This trial tests a personalized peptide vaccine combined with two immunotherapy drugs (durvalumab and tremelimumab) for patients with biliary tract cancer whose tumors have specific genetic changes. The goal is to see if this combination can shrink tumors or slow their growth.
Baltimore, MarylandAges 18 years+ - NCT06577532RecruitingEarly Phase 1
KRAS mRNA vaccine for advanced solid tumors
This early-phase trial is testing a new mRNA vaccine (ABO2102) designed to target KRAS mutations in advanced solid tumors. It may be an option if your cancer has a KRAS mutation and standard treatments are no longer working.
ShanghaiAges 18 years+ - NCT06578572RecruitingPhase 3
Seasonal malaria vaccine study for elimination
This trial tests a seasonal vaccination schedule with the R21 malaria vaccine to help eliminate malaria in your community. It may be a good fit if you are looking for a way to protect yourself or your child from malaria during peak transmission seasons.
NanoroAges 5 months–99 years - NCT06579755RecruitingPhase 3
Dengue vaccine study for adults aged 45 to 79
This study tests a dengue vaccine (TDV) in adults aged 45 to 79. It aims to see if the vaccine is safe and effective, even for people with common health conditions like diabetes or high blood pressure.
Buenos AiresAges 45–79 - NCT06585241RecruitingPhase 4
Study of Updated COVID-19 Vaccines for High-Risk Groups
This trial tests updated COVID-19 vaccines designed to better protect against current variants. It's for people who have already been vaccinated and are at higher risk for severe COVID-19.
Atlanta, GeorgiaAges 6 months+ - NCT06597916RecruitingPhase 2
RSV vaccine study for people with weakened immune systems
This study tests how well an RSV vaccine (Arexvy) works in people whose immune systems are weakened by certain cancers, autoimmune diseases, or treatments. It aims to see if the vaccine can protect these vulnerable groups from respiratory infections.
ViennaAges 18 years+ - NCT05077137RecruitingPhase 1
Testing an immune memory boost with checkpoint therapy
This early study tests whether “immune recall” (training the immune system using specific vaccine-like steps) can improve how well checkpoint drugs work for advanced melanoma. It is designed mainly to see if the approach is feasible and safe, and it may help some people respond better to PD-1 (with or without CTLA-4) treatment.
Durham, North CarolinaAges 18 years+ - NCT06611020Recruiting
Vaccine after cone surgery for cervical dysplasia
This trial tests whether giving an HPV vaccine after a cone biopsy (a surgery to remove abnormal cells from the cervix) helps prevent the HPV-related disease from coming back. It may be an option for patients who have had treatment for cervical dysplasia and have not been vaccinated against HPV before.
Milan, LombardyAges 18 years+ - NCT06612515Recruiting
Vaccine response in patients with weak immune systems
This study looks at how well vaccines for respiratory viruses work in people with weakened immune systems. It may help doctors give better vaccine advice to patients like you.
Cologne, North Rhine-WestphaliaAges 18 years+ - NCT06615960Recruiting
Testing a snake antivenom for snakebite victims
This trial tests a snake antivenom called PANAF-Premium to see if it is safe and works well for people bitten by snakes. It is for anyone with signs of venom poisoning, and you can join even if you have had other snakebite treatments or are pregnant.
Garoua, North RegionAges Any age - NCT06617715RecruitingPhase 3
Pneumonia vaccine trial for infants and children
This trial tests a 13-valent pneumococcal conjugate vaccine to prevent pneumonia and serious infections caused by pneumococcus bacteria. It may be a good option if your child has never had a pneumococcal vaccine before.
Zhengzhou, HenanAges 1 month–5 years - NCT06620185Recruiting
Flu immunity study: Vaccination and infection in lungs
This study looks at how your lungs and lymph nodes respond to flu infection and the nasal flu vaccine. It will help researchers understand how to create better protection against the flu.
LondonAges 18–55 - NCT06622434RecruitingPhase 1/Phase 2
Vaccine for glioblastoma after standard treatment
This trial tests an experimental vaccine for glioblastoma, given after the usual radiation and chemotherapy (temozolomide). The goal is to see if the vaccine helps the immune system fight remaining cancer cells.
Paris, IdfAges 18–75 - NCT06630884RecruitingPhase 1
Immune response to stress after trauma
This study looks at how the immune system responds to a mild stress (a typhoid vaccine) in people who have been through trauma but do not have PTSD. It may help understand why some people are more susceptible to inflammation after trauma.
San Francisco, CaliforniaAges 18–60 - NCT06650826Recruiting
Antibodies and blood clots in young adults
This study looks for certain antibodies in the blood of people aged 18 to 60 who have had a blood clot without a clear cause, or soon after an infection or vaccine, or who have had clots return despite treatment. It aims to understand why these clots happen.
BerlinAges 18–60 - NCT06665035RecruitingPhase 3
Dengue vaccine study for infants and toddlers
This trial tests two doses of a dengue vaccine in healthy infants and toddlers aged 6 to 21 months. It aims to see if the vaccine is safe and helps protect against dengue fever.
Barranquilla, AtlánticoAges 6 months–1.7 years - NCT06680128RecruitingPhase 1/Phase 2
Testing mRNA Japanese encephalitis vaccines in healthy adults
This trial tests two new mRNA vaccines for Japanese encephalitis, a brain infection spread by mosquitoes. It aims to find the safest and most effective dose in healthy adults, with a first stage in younger adults and a second stage in all adults.
BrisbaneAges 18 years+
Hear when a new Vaccination trial opens
We’ll email you when one opens — at most once a week, no account needed, unsubscribe anytime.
Common questions
- Are there clinical trials for vaccination?
- Yes. Clin2 currently lists 600 recruiting vaccination 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 vaccination 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 vaccination 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.