Trial Profile

A Phase 1, Randomized, Double-Blind, Third-Party-Unblinded Trial to Evaluate the Safety and Immunogenicity of 20-valent Pneumococcal Conjugate Vaccine (20vPnC) and 13-valent Pneumococcal Conjugate Vaccine (13vPnC) in Pneumococcal Vaccine-Naïve Adults 50 Years of Age and Older in China

Status: Not yet recruiting

Phase of Trial: Phase I

Latest Information Update: 09 Jul 2025

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At a glance

Drugs Pneumococcal 13-valent vaccine conjugate Sinovac Biotech (Primary) ; Pneumococcal 20-valent conjugate vaccine (Primary)
Indications Pneumococcal infections
Focus Adverse reactions
Sponsors Pfizer

01 Jul 2025 Planned End Date changed from 10 Mar 2026 to 24 Feb 2026.
01 Jul 2025 Planned primary completion date changed from 10 Mar 2026 to 24 Feb 2026.
17 Jun 2025 New trial record

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