Statement on the Booster for 4-6-Year-Olds for Protection against Pertussis

The purpose of this statement is to review the literature relevant to the 4- to 6-year-old preschool booster immunization and provide updated recommendations as required. Current recommendations for the 4- to 6-year-old preschool booster include additional doses of diphtheria, tetanus, acellular pertussis and polio containing vaccine.