Clinical trials
Vaccination clinical trials
Below are recruiting vaccination clinical trials, each written for real people, not researchers. We’re tracking 576 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT07628049RecruitingPhase 1/Phase 2
RSV and hMPV combination vaccine study for adults
This study tests a new vaccine that may protect against two common viruses that cause breathing problems, RSV and hMPV. It is for healthy younger adults (18-49) and older adults (60-80) to see if the vaccine is safe and works well.
Stockbridge, GeorgiaAges 18–80 - NCT07600983RecruitingPhase 1/Phase 2
New pneumococcal vaccine safety and effectiveness study
This trial tests a new vaccine designed to protect against 24 types of pneumococcal bacteria (which cause pneumonia and other serious infections). Researchers are checking if it's safe and how well it works in infants, children, and adults.
ShangqiuAges 1 month+ - NCT07122986RecruitingPhase 1
Testing a new E. coli vaccine in healthy adults
This study tests an experimental vaccine designed to protect against E. coli bacteria. It is for healthy adults aged 18 to 63 who want to help researchers see if the vaccine is safe and produces an immune response.
Anaheim, CaliforniaAges 18–64 - NCT06740630RecruitingPhase 3
A chickenpox vaccine study for healthy toddlers 12 to 15 months old
This study tests an experimental chickenpox vaccine to see how well it works and if it's safe. Your child may be able to join if they are healthy and between 12 and 15 months old.
Mobile, AlabamaAges 1 year–1.3 years - NCT06702449RecruitingPhase 1/Phase 2
UTI vaccine safety and immune response study for adults 18-64
This trial tests a new vaccine to prevent urinary tract infections (UTIs). It first checks safety and immune response in healthy adults, then in women with recent E. coli UTIs. The goal is to see if the vaccine can reduce future infections.
Lenexa, KansasAges 18–64 - NCT07838298RecruitingPhase 4
Flu vaccine response in older adults who get it yearly
This study checks how well the seasonal flu vaccine works in people 65 and older who have had flu shots regularly. It compares their immune response to that of younger adults to see if repeated vaccination still protects them.
SeoulAges 19 years+ - NCT07663032RecruitingPhase 1
Pan-Salmonella vaccine study for healthy young adults
This trial tests an experimental vaccine designed to protect against multiple types of Salmonella bacteria (which cause typhoid fever and other infections). It is given to healthy adults aged 18 to 45 to check safety and immune response.
BloemfonteinAges 18–45 - NCT07605520RecruitingEarly Phase 1
COVID-19 Booster Vaccine Study for Previously Vaccinated Adults
This study tests new COVID-19 booster vaccine candidates in healthy adults who previously received mRNA COVID-19 vaccines. Researchers will monitor safety and how well your immune system responds to help develop better COVID-19 protection.
CréteilAges 18–65 - NCT07431853RecruitingPhase 2
Study of an mRNA flu vaccine for adults
This trial is testing a new mRNA-based flu vaccine in healthy adults. It aims to see if the vaccine is safe and effective at preventing influenza.
Mobile, AlabamaAges 18 years+ - NCT06855160RecruitingPhase 3
Chickenpox & MMR Vaccine Study for Healthy Toddlers
This study tests a new chickenpox vaccine combined with a standard MMR vaccine (measles, mumps, rubella) in healthy children aged 12-15 months. The goal is to see how well the vaccines work and how safe they are when given as a shot in the arm.
Tucson, ArizonaAges 1 year–1.3 years - NCT07734649RecruitingPhase 1/Phase 2
RSV and HMPV vaccine study for adults 60 and older
This study tests a new vaccine that targets two respiratory viruses, RSV and HMPV, to see if it's safe and effective in adults 60 years and older. It may help prevent serious lung infections caused by these viruses.
Gadsden, AlabamaAges 60 years+ - NCT07582796RecruitingPhase 1/Phase 2
RSV Vaccine Study for Adults in China
This study tests a new vaccine to protect against RSV (a common respiratory virus that causes cold-like illness, especially serious in older adults). The vaccine is made in laboratory cell cultures and includes an immune-boosting ingredient. Researchers want to see if it's safe and if it helps your body fight RSV infection.
Zigong, SichuanAges 18 years+ - NCT07400003RecruitingPhase 1/Phase 2
Shingles mRNA vaccine safety and immune response study
This trial tests a new mRNA vaccine to prevent shingles (herpes zoster). It checks if the vaccine is safe and helps your body build immunity. It's for adults aged 40 or older (phase 1) or 50+ (phase 2).
XinjiangAges 40 years+ - NCT06824519RecruitingPhase 1/Phase 2
Quadrivalent flu vaccine trial for adults
This trial tests a new quadrivalent influenza (flu) vaccine in adults 18 and older. It aims to see if the vaccine is safe and helps protect against the flu. You may be able to join if you are generally healthy and have not had the flu or a flu shot recently.
Shijiazhuang, HebeiAges 18 years+ - NCT06806137RecruitingPhase 3
Chickenpox vaccine study for healthy toddlers
This study tests how well a second dose of an investigational chickenpox vaccine works and how safe it is in healthy children. Your child would get the first dose between 12-15 months old, then a booster 3 months later.
Salvaleón de Higüey, La Altagracia ProvinceAges 1 year–1.3 years - NCT06693895RecruitingPhase 3
Chickenpox vaccine safety study for healthy toddlers
This study tests a new chickenpox vaccine for healthy children ages 12 to 15 months. It aims to see if the vaccine is safe and helps protect against chickenpox.
Phoenix, ArizonaAges 1 year–1.3 years - NCT07838038Recruiting
COVID-19 vaccine reminder messages for Kaiser Permanente members
This study tests whether different email messages can encourage people to get the updated COVID-19 vaccine. If you join, you'll be part of a Kaiser Permanente program that sends you reminders to help you stay protected.
Pasadena, CaliforniaAges 18 years+ - NCT04899765RecruitingPhase 4
Measles and BCG shots for moms and toddlers
This trial tests whether giving measles and BCG vaccines to mothers and their children after the child turns 12 months is safe and helpful. It specifically looks at women who are not pregnant and meet several health and study-area requirements.
Bissau, Bissau CodexAges 15–35 - NCT06344065RecruitingPhase 3
New whooping cough combo vaccine for 3-month-old infants
This trial tests a new combination vaccine that protects infants against diphtheria, tetanus, and whooping cough. It is for healthy 3-month-old babies whose parents have not yet given them a similar shot.
Nanning, GuangxiAges 3 months–3 months - NCT07793227RecruitingPhase 3
Testing a new hepatitis A vaccine in healthy people
This trial tests a new hepatitis A vaccine in healthy people aged 1 year and older. It aims to see how well the vaccine prevents hepatitis A and checks for any side effects.
HanoiAges 1 year+ - NCT07779408RecruitingPhase 1/Phase 2
H5N8 flu vaccine study for healthy adults
This study tests an experimental flu vaccine designed to protect against the H5N8 bird flu virus. It is given with an ingredient that may boost the immune response. The study will check if the vaccine is safe and how well it triggers the body's defenses.
Tempe, ArizonaAges 18 years+ - NCT07721649Recruiting
Flu shot during hospital stay for heart patients
This study checks if giving a flu shot to heart patients while they are in the hospital helps prevent heart problems later. It tests whether the flu shot can reduce the risk of further heart events.
CologneAges 18 years+ - NCT06137664RecruitingPhase 1/Phase 2
New oral polio vaccine study for adults, children, and newborns
This trial tests new oral polio vaccines in healthy adults, children, and newborns. It aims to see if these vaccines are safe and help protect against polio.
DhakaAges birth–45 years - NCT06815250Recruiting
Boosting maternal vaccine knowledge and uptake: The InTroDuce-Programme
This trial tests a programme to help pregnant women learn about and get flu and Tdap vaccines. It aims to increase vaccination rates and improve health for mothers and babies.
Bandar Baru Bangi, SelangorAges 18 years+
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Common questions
- Are there clinical trials for vaccination?
- Yes. Clin2 currently lists 576 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.