Prevnar (pneumococcal vaccine) 13 vaccine has diphtheria proteins in it. Does Prevnar (pneumococcal vaccine) 13 vaccine protect against pneumococcus and diphtheria? Thank-you!

No. The diphtheria proteins used for PCV-13 (Prevnar) are not antigenic for diphtheria. That means they are not recognized by the body to produce an immune response. They just help carry the pneumococcal proteins into the appropriate cells to create the immune response for the pneumococcal bacteria. .