- Conditions
- Streptococcus Pneumoniae
- Interventions
- PG4 vaccine in Buffer 1 with low dose PA-001, PG4 in Buffer 1 with low dose PA-002, PG4 in Buffer 1 with high dose PA-001, PG4 vaccine in Buffer 1 with high dose PA-002, PG4 vaccine in Buffer 2, 20-valent pneumococcal conjugate vaccine, Saline injection
- Biological
- Lead sponsor
- Pfizer
- Industry
- Eligibility
- 65 Years to 84 Years
- Enrollment
- 380 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2025 – 2027
- U.S. locations
- 20
- States / cities
- Lake Forest, California • Rolling Hills Estates, California • Greenacres City, Florida + 13 more
Search Results
Search by objective public record fields.
Search by query text, NCT ID, condition, intervention, sponsor, city, state, recruitment status, phase, study type, healthy volunteer eligibility, sex, or age. Results come from ClinicalTrials.gov. When the live registry is unavailable, a clearly labeled stored copy may be shown.
These results were retrieved from the live ClinicalTrials.gov registry. Filters and sort order apply to this result list.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Showing 1–7
of 7
matching trials from the live ClinicalTrials.gov search.
- Conditions
- Pneumococcal Disease
- Interventions
- PG4, 20-valent pneumococcal conjugate vaccine (20vPnC)
- Biological
- Lead sponsor
- Pfizer
- Industry
- Eligibility
- 15 Months to 17 Years
- Enrollment
- 1,200 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2026 – 2027
- U.S. locations
- 57
- States / cities
- Birmingham, Alabama • Guntersville, Alabama • Fair Oaks, California + 37 more
- Conditions
- Pneumococcal Disease
- Interventions
- PG4, 20-valent pneumococcal conjugate vaccine (20vPnC)
- Biological
- Lead sponsor
- Pfizer
- Industry
- Eligibility
- 42 Days to 98 Days
- Enrollment
- 2,400 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2026 – 2028
- U.S. locations
- 23
- States / cities
- Estero, Florida • Fort Lauderdale, Florida • Fort Myers, Florida + 16 more
- Conditions
- Pneumococcal Disease
- Interventions
- PG4, 20-valent pneumococcal conjugate vaccine (20vPnC), 15-valent pneumococcal conjugate vaccine (PCV15)
- Biological
- Lead sponsor
- Pfizer
- Industry
- Eligibility
- 42 Days to 98 Days
- Enrollment
- 605 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2024 – 2027
- U.S. locations
- 61
- States / cities
- Fayetteville, Arkansas • Jonesboro, Arkansas • La Puente, California + 39 more
- Conditions
- Pneumococcal Disease
- Interventions
- PG4, 20-valent pneumococcal conjugate vaccine (20vPnC)
- Biological
- Lead sponsor
- Pfizer
- Industry
- Eligibility
- 42 Days to 211 Days
- Enrollment
- 3,230 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2026 – 2029
- U.S. locations
- 106
- States / cities
- Bessemer, Alabama • Birmingham, Alabama • Centreville, Alabama + 75 more
- Conditions
- Pneumococcal Disease
- Interventions
- PG4, 20-valent pneumococcal conjugate vaccine (20vPnC)
- Biological
- Lead sponsor
- Pfizer
- Industry
- Eligibility
- 12 Months to 15 Months
- Enrollment
- 225 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2024 – 2026
- U.S. locations
- 35
- States / cities
- Washington D.C., District of Columbia • Miami, Florida • Chamblee, Georgia + 18 more
- Conditions
- Pneumococcal Disease
- Interventions
- PG4 Multivalent Vaccine, 20 Valent Pneumococcal Conjugate Vaccine (20vPnC)
- Biological
- Lead sponsor
- Pfizer
- Industry
- Eligibility
- 18 Years to 49 Years
- Enrollment
- 4,670 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2026 – 2027
- U.S. locations
- 37
- States / cities
- Birmingham, Alabama • Lake Forest, California • Walnut Creek, California + 29 more