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Vaccine Innovation. Beyond Convention.

We are dedicated to eliminating bacterial infections such as invasive pneumococcal disease, Group A Strep, periodontitis and Shigella to protect every child born and every adult at risk across the globe.

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Pushing the Boundaries of What’s Possible

Despite widespread vaccination with current pneumococcal conjugate vaccines (PCVs), there is an abundance of non-vaccine strains of the Streptococcus pneumoniae bacteria causing significant morbidity and mortality. This underscores the importance of advancing VAX-24, our lead 24-valent PCV candidate, which is the broadest-spectrum PCV in U.S. clinics today. Upon achieving clinical proof-of-concept, VAX-24 was granted FDA Breakthrough Therapy designation for the prevention of invasive pneumococcal disease in adults.

Re-Engineering How Vaccines are Made

We strive to overcome the limitations of conventional, cell-based vaccine approaches using advanced chemistry and modern synthetic techniques – including our XpressCF™ cell-free protein synthesis platform – to produce broad-spectrum vaccines that are uniquely capable of breaking down bacteria’s complex defense mechanisms while preserving immunogenicity.

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Building a Pipeline of High-Fidelity and Broad-Spectrum Vaccines

Our PCV franchise is intended to improve upon existing pneumococcal vaccines by covering a significant portion of the invasive pneumococcal disease currently in circulation that is associated with high case-fatality rates, antibiotic resistance and meningitis. Following VAX-24, we are developing VAX-31, a 31-valent PCV candidate. Additional vaccine candidates in preclinical development target Group A Strep, periodontitis and Shigella.

Latest News

01

Vaxcyte Initiates Phase 2 Study Evaluating VAX-31 for the Prevention of Invasive Pneumococcal Disease in Infants

-- Company Expects to Announce VAX-31 Infant Study Topline Safety, Tolerability and Immunogenicity Data from Primary Immunization Series in Mid-2026, Followed by Topline Data from the Booster Dose Approximately Nine Months Later -- -- VAX-31 is Designed to Cover Approximately 94% of Invasive
02

Vaxcyte Provides Positive Regulatory Updates on VAX-31 Pediatric and Adult Programs

   -- VAX-31 Infant Indication: Investigational New Drug Application Cleared by FDA; Company Expects to Initiate VAX-31 Infant Phase 2 Study by the End of January 2025 -- -- VAX-31 Adult Indication: Breakthrough Therapy Designation Granted by FDA; Company Plans to Initiate Adult Phase 3 Pivotal,
03

Vaxcyte Reports Third Quarter 2024 Financial Results and Provides Business Update

-- Company Reported Positive Topline Safety, Tolerability and Immunogenicity Data from Phase 1/2 Study of VAX-31, its 31-Valent Pneumococcal Conjugate Vaccine (PCV) Candidate, in Adults Aged 50 and Older -- -- PCV Adult Indication: VAX-31 Selected to Advance to Phase 3 Program; Initiation of Phase

Careers: Built to Scale with Purpose

Looking for higher aspirations to ignite your mind and inspire your heart? Then join a team that brings grit and grace to the challenge of protecting every human from the consequences of endemic bacterial infections.