Vaccine · St. Louis area, MO
Vaccine studies in St. Louis area, MO
8 recruiting studies have a site in the St. Louis area. This page includes nearby cities such as Saint Louis, Chesterfield, Creve Coeur, Florissant.
8 recruiting studiesSource: ClinicalTrials.gov, refreshed October 26, 2026How we list studies
Studies
- RecruitingHealthy volunteersPhase 1
A Clinical Study of Novel Pneumococcal Vaccine V118C in Children (V118C-002)
Merck Sharp & Dohme LLC
- Location
- St Louis, MO + 14 other US sites
- Eligibility basics
- Ages 2 mo–1
- RecruitingHealthy volunteersPhase 1
A Safety and Immunogenicity Trial of OCU500, ChAd36 Vector Encoding SARS-CoV-2 Spike Vaccine Via Intranasal and Inhalational Routes in Previously Vaccinated Adults
National Institute of Allergy and Infectious Diseases (NIAID)
- Location
- St Louis, MO + 4 other US sites
- Eligibility basics
- Ages 18–64
- RecruitingHealthy volunteersPhase 3
A Study to Assess the Safety, Tolerability, and Immunogenicity of 3 Lots of a Multivalent Pneumococcal Conjugate Vaccine Administered to Adults
Pfizer
- Location
- Chesterfield, MO + 36 other US sites
- Eligibility basics
- Ages 18–49
- RecruitingHealthy volunteersPhase 3
A Study to Learn About a Clostridioides Difficile Vaccine in People 65 Years of Age and Older
Pfizer
- Location
- St Louis, MO + 138 other US sites
- Eligibility basics
- Ages 65+
- RecruitingHealthy volunteersPhase 3
A Study on the Efficacy of a Vaccine Against Influenza in Adults ≥65 Years of Age
GlaxoSmithKline
- Location
- Chesterfield, MO + 130 other US sites
- Eligibility basics
- Ages 65+
- RecruitingPhase 3
A Study to Learn About Revaccination With a Vaccine Called RSVpreF in Immunocompromised Adults
Pfizer
- Location
- St Louis, MO + 12 other US sites
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Dissecting Human Immune Responses to Infection With Influenza or SARS-CoV-2
Washington University School of Medicine
- Location
- St Louis, MO
- Eligibility basics
- Ages 18–60
- RecruitingHealthy volunteersPhase 4
Characterizing the Human Airway Immune Response to FluMist Vaccination
Washington University School of Medicine
- Location
- St Louis, MO
- Eligibility basics
- Ages 18–40
Who these studies look for
Vaccine studies often exclude people who recently received a related vaccine or had the infection, and those with conditions or medicines that affect the immune system.
Matching a page like this one never means you qualify. Each research team decides eligibility at screening.