Pfizer (PFE) reports positive Phase 2 results for its 25-valent pediatric pneumococcal vaccine candidate, showing robust immunogenicity, broader protection across 25 serotypes and enhanced serotype 3 responses versus PREVNAR 20

Newsquawk StaffPublished 20 May 2026, 09:26 UTCOn the live feed at 09:06 UTC — 6 more headlines followed before this page went public

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09:06

Pfizer (PFE) reports positive Phase 2 results for its 25-valent pediatric pneumococcal vaccine candidate, showing robust immunogenicity, broader protection across 25 serotypes and enhanced serotype 3 responses versus PREVNAR 20

09:05

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The candidate was well tolerated with no safety concerns. Pfizer has initiated its Phase 3 pediatric programme and advanced its adult programme to a 35-valent candidate.

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