This the definition of PNEUMOVAX 23 is a vaccine used to help prevent infections caused by certain types of germs or bacteria. Mommy, I suggest you call your nearest health center to know more about that specific vaccine and also I encourage you to join theAsianparentPH new community called Team BakuNanay. https://www.facebook.com/groups/bakunanay/?ref=share #TeamBakuNanay #ProudToBeABakuNanay #VaccineWorksForAll #HealthierPhilippines #AllAboutBakuna