- Conditions
- Group B Streptococcus Infections
- Interventions
- Multivalent Group B streptococcus vaccine, Placebo
- Biological
- Lead sponsor
- Pfizer
- Industry
- Eligibility
- 0 Years to 40 Years
- Enrollment
- 1,208 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2019 – 2024
- U.S. locations
- 26
- States / cities
- Mobile, Alabama • Phoenix, Arizona • Lancaster, California + 11 more
Source: ClinicalTrials.gov public record
Updated Aug 4, 2025 · Synced May 21, 2026, 9:50 PM EDT