Pfizer’s Prevnar 13(R) Shown to be Immunogenic in Older Children and …  – CNBC – CNBC

Prevnar 13(R) is not 100% effective and will only help protect against the 13 strains included in the vaccine — Effectiveness when given less than 5 years after a pneumococcal polysaccharide vaccine is not known Important Safety Information for Prevnar 13 …