Clinical trials
Vaccination clinical trials
Below are recruiting vaccination clinical trials, each written for real people, not researchers. We’re tracking 575 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- 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 - NCT05923970Recruiting
MMRV vaccine booster in pregnant adults in Alberta
This study looks at whether getting a third dose of the MMRV vaccine during pregnancy is helpful. It focuses on pregnant women who were screened for rubella immunity during routine prenatal testing.
Edmonton, AlbertaAges 18 years+ - NCT04875819RecruitingPhase 4
HIV vaccine safety check for meningitis and pneumonia shots
This trial studies how safe and how well the body’s immune system responds to meningococcal and pneumococcal vaccines in adults living with HIV. It may help confirm these vaccines work properly and are safe for people on HIV treatment.
HvidovreAges 18 years+ - NCT06088745RecruitingPhase 3
Shingles vaccine trial for adults 40+
This trial tests a new shingles vaccine to see how well it prevents shingles in adults aged 40 and older. It aims to help those who have not had shingles recently or been vaccinated against it before.
Zhenjiang, JiangsuAges 40 years+ - NCT06184542RecruitingPhase 1
New DTaP vaccine safety trial for children
This trial tests a new combined vaccine for diphtheria, tetanus, and whooping cough (pertussis) in children of different ages. It aims to see if the vaccine is safe and how well it works, helping to protect against these serious diseases.
Dazhou, SichuanAges 2 months–6 years - NCT07833436RecruitingPhase 1
Testing a new Lassa fever vaccine
This trial tests a new vaccine against Lassa fever to see if it is safe and how well it triggers an immune response. It may help protect against this serious infection.
ParisAges 18–55 - NCT07730450RecruitingPhase 4
COVID-19 vaccine study for healthy adults aged 18 to 64
This trial tests a COVID-19 vaccine in healthy adults to see how well it works. It may be an option if you are not at higher risk for severe COVID-19 and have not had COVID-19 in the past 6 months.
Walnut Creek, CaliforniaAges 18–64 - NCT07688369RecruitingPhase 1
Testing a new polio vaccine in healthy adults
This trial tests a new recombinant polio vaccine (rPV) to see if it is safe and works as well as the current IPOL vaccine. It is for healthy adults who have not had polio or a polio vaccine recently.
East Melbourne, VictoriaAges 18–60 - NCT07510308RecruitingPhase 1
Vaccine trial for advanced colorectal cancer
This trial tests a personalized vaccine made from your own tumor cells for advanced colorectal cancer that is mismatch repair proficient (pMMR). It aims to see if the vaccine can help when standard treatments have stopped working.
Chengdu, SichuanAges 18–75 - NCT07505836RecruitingPhase 3
Meningitis vaccine trial for toddlers aged 12–23 months
This study tests a vaccine that protects against four common types of meningitis (groups A, C, Y, and W135) in toddlers aged 12–23 months. It helps researchers see if the vaccine is safe and works well for young children.
Nanning, GuangxiAges 1 year–1.9 years - NCT07505810RecruitingPhase 3
Meningitis vaccine trial for infants 3-5 months old
This trial tests a vaccine that protects against four types of meningococcal bacteria (groups A, C, W, and Y) in healthy babies aged 3 to 5 months. The vaccine is given to help prevent meningitis and other serious infections.
Nanning, GuangxiAges 3 months–5 months - NCT07505823RecruitingPhase 3
Meningococcal vaccine trial for infants 6-11 months old
This study tests whether a new vaccine safely protects infants aged 6 to 11 months against four types of meningococcal bacteria that can cause serious infections like meningitis and blood infections. It is designed for healthy babies who have not yet received any meningococcal vaccine.
Nanning, GuangxiAges 6 months–11 months - NCT07485855RecruitingPhase 3
Flu vaccine study for blood cancer patients
This trial tests how well the flu vaccine works in people with blood cancers like lymphoma, leukemia, or multiple myeloma. It aims to find the best vaccination strategy to protect you during treatment.
SeoulAges 19 years+ - NCT07487077RecruitingPhase 4
Extended interval oral cholera vaccine trial in Kenya
This trial tests giving the oral cholera vaccine on a longer dosing schedule than usual. It aims to see if a longer gap between doses still works well to protect people from cholera, especially helpful in places where returning for a second dose is hard.
NairobiAges 1 year+ - 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 - NCT07416461Recruiting
Malaria vaccine study for reducing Salmonella risk
This study looks at whether malaria vaccines can also help lower the risk of a serious bacterial infection called invasive non-typhoidal Salmonella (iNTS). If you have a fever, you may be able to join and help researchers understand this connection.
KinshasaAges Any age - NCT07377656RecruitingPhase 2
HPV vaccine delivery with childhood shots
This trial tests a way to give HPV vaccines along with routine childhood immunizations in Ghana. It aims to protect against HPV, a virus that can cause cervical cancer, by making it easier to get the vaccine.
AccraAges 9 months–20 years - NCT07301905Recruiting
HPV vaccine study for parents in Flint, MI
This study tests a culturally tailored health message to see if it helps parents feel more open to the HPV vaccine for their daughters. It focuses on families in Flint whose daughters have not yet received the vaccine.
Flint, MichiganAges 18 years+ - NCT07266857Recruiting
Study on HPV vaccine education in middle schools
This trial tests if an educational program called e-Bug can increase HPV vaccination rates. It uses only anonymous data from schools, so no individual enrollment is needed.
Nice, Alpes MaritimesAges Any age - NCT05266898RecruitingPhase 4
HPV vaccine response study for people living with HIV
This trial studies how well the Gardasil-9 HPV vaccine triggers the body’s immune response in people living with HIV. It may help doctors understand the best way to protect against HPV-related cancers and infections in this population.
New Orleans, LouisianaAges 18–65 - NCT07177417RecruitingPhase 4
How the immune system responds to FluMist in the airways
This study tests how the immune system in your nose and airways responds to the FluMist nasal spray flu vaccine. It may help doctors understand why some people get better protection from the flu.
St Louis, MissouriAges 18–40 - NCT07097012RecruitingPhase 4
Whooping cough and RSV vaccines: together or separate in pregnancy
This study tests whether giving two vaccines—one for whooping cough (Tdap) and one for RSV—at the same time is safe and effective compared to giving them separately during pregnancy. It may help protect your baby from both diseases early in life.
Vancouver, British ColumbiaAges 18–49 - NCT06995157Recruiting
HPV infections and vaccine attitudes in Slovenian women
This observational study looks at HPV infections and women's views about the HPV vaccine in Slovenia. It aims to understand the characteristics of HPV infections and attitudes toward vaccination after the vaccine became available.
Ljubljana, Municipality of DomžaleAges Up to 35 years - NCT06907667Recruiting
Do timing of flu shot affect protection in kidney failure?
This study looks at whether getting a flu shot at a different time of day affects how well it works in people with chronic kidney failure, including those on dialysis or with a kidney transplant. Researchers want to see if timing can improve the body's immune response to the vaccine.
Nice, Alpes-MaritimesAges 18–100
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Common questions
- Are there clinical trials for vaccination?
- Yes. Clin2 currently lists 575 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.