Pneumococcal Serotype 19F Conjugate Vaccine Induces Cross-Protective Immunity to Serotype 19A in a Murine Pneumococcal Pneumonia Model

Abstract

Immunization with a pneumococcal conjugate vaccine (PNC) containing serotype 19F induces cross-reactive antibodies to 19A in mice and human infants. Active immunization with PNC and passive immunization with serum samples from infants vaccinated with PNC containing serotype 19F, but not serotype 19A, protected against lung infection caused by both serotypes in a murine model.