Vaccine · Washington
Vaccine studies in Washington
9 studies have at least one recruiting site in Washington. 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.
9 recruiting studiesSource: ClinicalTrials.gov, refreshed October 26, 2026How we list studies
Studies
- RecruitingHealthy volunteersPhase 1/Phase 2
Phase 1/2 Study of Respiratory Syncytial Virus and Human Metapneumovirus (RSV+HMPV) Vaccine Candidate in Adults 60 Years of Age and Older
Sanofi
- Location
- Seattle, WA + 49 other US sites
- Eligibility basics
- Ages 60+
- RecruitingHealthy volunteersPhase 1/Phase 2
A Study of Investigational RSV/hMPV Combination and Investigational hMPV Vaccines in Younger and Older Adults
GlaxoSmithKline
- Location
- Seattle, WA + 2 other US sites
- Eligibility basics
- Ages 18–80
- RecruitingHealthy volunteersPhase 1/Phase 2
A Study on the Safety and Immune Response of a Urinary Tract Infection (UTI) Vaccine in Adults 18-64 Years of Age and Clinical Efficacy in Females 18-64 Years of Age
GlaxoSmithKline
- Location
- Seattle, WA + 5 other US sites
- Eligibility basics
- Ages 18–64
- RecruitingHealthy volunteersPhase 3
A Phase 3 Study of Revaccination in Subsequent Pregnancies With Bivalent RSV Vaccine and Duration of Protection of a Single Dose
Pfizer
- Location
- Seattle, WA + 76 other US sites
- Eligibility basics
- Ages 0 mo+
- 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
- Seattle, WA + 78 other US sites
- Eligibility basics
- Ages 18–45
- RecruitingPhase 1
A Study on the Safety and Immune Response of Investigational mRNA Seasonal Flu/COVID-19 Combination Vaccine in Adults
GlaxoSmithKline
- Location
- Seattle, WA + 11 other US sites
- Eligibility basics
- Ages 65–85
- RecruitingHealthy volunteers
Interpersonal Communication Training and Vaccination Workflow Training Alone and in Combination to Improve Communication and Recommendations About HPV Vaccination in Pharmacies, IMPACT HPV Trial
Fred Hutchinson Cancer Center
- Location
- Seattle, WA
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
The INFLUENTIAL Trial- Evaluation of National Inpatient Influenza Vaccination Program
University of Colorado, Denver
- Location
- Seattle, WA + 1 other US site
- Eligibility basics
- Ages 6 mo–99
- RecruitingHealthy volunteers
Hemophilia A Research Program
University of Washington
- Location
- Seattle, WA
- Eligibility basics
- Any age listed
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.