Vaxcyte Reports Positive Topline Data from Phase 1/2 Study of VAX-31, its 31-Valent Pneumococcal Conjugate Vaccine Candidate, in Adults Aged 50 and Older

-- At All Doses Studied, VAX-31 Demonstrated Robust Opsonophagocytic Activity Immune Responses for All 31 Serotypes --

-- At Middle and High Doses, VAX-31 Met or Exceeded Regulatory Immunogenicity Criteria for All 31 Serotypes --