Vaccine · Missouri
Vaccine studies in Missouri
13 studies have at least one recruiting site in Missouri. Vaccine trials test how well new or updated vaccines produce an immune response and how they are tolerated. Many recruit healthy adults; some focus on older adults, children or people with specific conditions.
13 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
Safety and Immunogenicity Study of Revaccination With SCB-1019T in Healthy Adults
Clover Biopharmaceuticals USA, LLC
- Location
- Kansas City, MO + 4 other US sites
- Eligibility basics
- Ages 60–85
- 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 Learn About How a New Pneumococcal Vaccine Works in Infants.
Pfizer
- Location
- Columbia, MO + 101 other US sites
- Eligibility basics
- Ages 1 mo–7 mo
- 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+
- RecruitingHealthy volunteersPhase 3
A Study on the Immune Response and Safety of an Investigational Chickenpox Vaccine When Given to Healthy Children 12 to 15 Months of Age
GlaxoSmithKline
- Location
- Jefferson City, MO + 46 other US sites
- Eligibility basics
- Ages 1–1
- RecruitingHealthy volunteersPhase 2
A Study to Learn About mRNA Vaccines Against Influenza in Adults
Pfizer
- Location
- Kansas City, MO + 14 other US sites
- Eligibility basics
- Ages 18+
- 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+
- RecruitingPhase 1/Phase 2
Study to Evaluate Safety, Efficacy and Immunogenicity of Acne mRNA Vaccine in Adults With Moderate to Severe Acne
Sanofi Pasteur, a Sanofi Company
- Location
- Saint Joseph, MO + 78 other US sites
- Eligibility basics
- Ages 18–45
- 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.
Questions
Could I receive a placebo?
Often yes. Many vaccine trials are randomized, so some participants receive a comparison vaccine or placebo. The consent document explains this.