Vaccination Clinical Trials

61 recruitingLast updated: June 17, 2026

There are 61 actively recruiting vaccination clinical trials across 29 countries. Studies span Not Applicable, Phase 4, Phase 2, Phase 3, Phase 1. Top locations include New York, New York, United States, Paris, France, Brooklyn, New York, United States. Updated daily from ClinicalTrials.gov.


Vaccination Trials at a Glance

61 actively recruiting trials for vaccination are listed on ClinicalTrialsFinder across 6 cities in 29 countries. The largest study group is Not Applicable with 22 trials, with the heaviest enrollment activity in New York, Paris, and Brooklyn. Lead sponsors running vaccination studies include Assistance Publique - Hôpitaux de Paris, Centre Hospitalier Universitaire de Nice, and Children's Hospital Medical Center, Cincinnati.

Browse vaccination trials by phase

Treatments under study

About Vaccination Clinical Trials

Looking for clinical trials for Vaccination? There are currently 27 studies actively recruiting participants. Clinical trials offer access to new treatments before they are widely available, and every approved therapy in use today was first tested through a clinical trial.

Below you can browse trials, sign up for alerts when new Vaccination trials open, and view eligibility criteria for each study. Each listing includes the study phase, locations, and enrollment details.

Frequently Asked Questions

Common questions about Vaccination clinical trials

A clinical trial is a carefully designed research study that tests new medical treatments, drugs, devices, or approaches in human volunteers. Every approved medication and treatment available today was proven safe and effective through clinical trials.

All clinical trials are reviewed and approved by Institutional Review Boards (IRBs) — independent committees that evaluate patient safety. Trials follow strict protocols, and your health is monitored closely throughout. You can withdraw at any time.

Not necessarily. Many trials compare the new treatment against the current standard of care, meaning all participants receive active treatment. When placebos are used, they are typically combined with standard treatment, not given alone. The trial description will always specify the design.

Under the Affordable Care Act, most private insurers are required to cover routine patient care costs during a clinical trial. The sponsor typically covers the investigational treatment itself. Medicare also covers routine costs for qualifying trials.

Yes. Participation is completely voluntary. You can withdraw at any time, for any reason, without it affecting your access to standard medical care.

Each trial has specific eligibility criteria — including age, diagnosis, disease stage, prior treatments, and general health. Browse the trials listed above and check their eligibility sections. You can also contact the trial site directly to discuss your situation.

Showing 120 of 61 trials

Recruiting
Phase 4

Concurrent Versus Sequential Administration of Tdap and RSV Vaccines in Pregnancy

PregnancyHealthyRSV+1 more
Canadian Immunization Research Network60 enrolled4 locationsNCT07097012
Recruiting
Not Applicable

Microvideos for Improving HPV Vaccination Among Childhood Cancer Survivors

HPV Vaccination
University of Utah55 enrolled1 locationNCT07648953
Recruiting
Not Applicable

Trial in HPV Prevention for the U.S. Vietnamese Community

HPV VaccinationHPV-related Cancers
Northwestern University96 enrolled1 locationNCT07637630
Recruiting

Sleep and Adolescent Vaccine Immunogenicity Pilot/Observational Study

Vaccination
Children's Hospital Medical Center, Cincinnati66 enrolled1 locationNCT07636525
Recruiting

COVID-19 Transmission and Morbidity in Malawi

SARS-CoV-2 infectionSARS CoV 2 Vaccination
Boston University1,500 enrolled2 locationsNCT05973084
Recruiting
Not Applicable

Empowering Vietnamese Americans

Cancer PreventionHPV Vaccination
Michigan State University60 enrolled1 locationNCT07164391
Recruiting
Not Applicable

Study of the Impact of Time of Vaccination on Response to Influenza Vaccine in Patients With Chronic Renal Failure

Vaccination; Infection
Centre Hospitalier Universitaire de Nice735 enrolled1 locationNCT06907667
Recruiting
Not Applicable

Community Care Intervention to Decrease COVID-19 Vaccination Inequities

COVID-19 vaccination
RAND800 enrolled4 locationsNCT06156254
Recruiting
Not Applicable

OptiMAx Will Test Whether SQ-LNS Incentivises Vaccination Uptake in Rural Chad and Niger, With a Cost Effectiveness Analysis. It Will Also Look at Whether Having Received SQ-LNS Before Becoming Malnourished Leads to Better Outcomes for Children Treated Under the OptiMA Protocol.

VaccinationMalnutrition Severe
Alliance for International Medical Action20,000 enrolled2 locationsNCT07592260
Recruiting

Vaccine Responses to SARS-CoV-2 and Other Emerging Infectious Diseases

Healthy VolunteerCOVID-19Vaccination
National Institute of Allergy and Infectious Diseases (NIAID)1,200 enrolled1 locationNCT05078905
Recruiting

Clinical Laboratory Evaluation, Assessment of Symptoms and Recovery in Patients With Post-COVID-19-Vaccination Syndrome

Post-Acute COVID-19 Vaccination SyndromePostviral Fatigue
University of Bern200 enrolled1 locationNCT07400848
Recruiting
Not Applicable

Enhancing Maternal Vaccine Knowledge and Uptake: The InTroDuce-Programme Trial

KnowledgeVaccination UptakeInfluenza+3 more
Universiti Putra Malaysia351 enrolled4 locationsNCT06815250
Recruiting

Study of the Cellular Response Induced After Vaccination Against the Hepatitis B Virus

Hepatitis B vaccinationImmune responseT Cells
Assistance Publique - Hôpitaux de Paris115 enrolled1 locationNCT06876467
Recruiting
Phase 2

Age-descending Study to Evaluate the Safety and Immunogenicity of the Cholera Conjugate Vaccine in Adults and Children

Cholera Vaccination
International Vaccine Institute390 enrolled1 locationNCT07509047
Recruiting

Influenza Vaccination, ACEI and ARB in the Evolution of SARS-CoV2 Infection

COVID19Influenza vaccinationARB+3 more
Consorci Sanitari de Terrassa3,000 enrolled1 locationNCT04367883
Recruiting
Phase 4

Extended Dosing Intervals Trial for Oral Cholera Vaccine, Kenya

Cholera Vaccination
Albert B. Sabin Vaccine Institute1,071 enrolled1 locationNCT07487077
Recruiting

Is a Third Dose of MMRV Vaccine Beneficial for the Adult Population in Alberta?

Vaccination FailureVaccine Response Impaired
University of Alberta200 enrolled1 locationNCT05923970
Recruiting
Not Applicable

Culturally Targeted Health Communication and Receptivity to the Human Papillomavirus Vaccine Among Parents in Flint, MI

HPV Vaccination
Michigan State University265 enrolled1 locationNCT07301905
Recruiting
Not Applicable

Stories to Prevent (StoP) HPV Cancers

EmotionsHuman Papillomavirus Vaccination
Milton S. Hershey Medical Center200 enrolled1 locationNCT06808776
Recruiting
Not Applicable

"Facts Tell… and With Stories Sell?" Combining Viewer-tailored Personal Human Papillomavirus (HPV) Narrative Video With HPV Vaccine Information Video to Improve HPV Vaccine Uptake

Vaccination
Johns Hopkins Bloomberg School of Public Health1,100 enrolled1 locationNCT06587243