Safety Of A Fifth Dose Of Diphtheria And Tetanus Toxoid And Acellular Pertussis Vaccine In Children Experiencing Extensive, Local Reactions To The Fourth Dose

Extensive local reactions have been reported after booster doses of diphtheria and tetanus toxoid and acellular pertussis vaccine, but few data are available on revaccination after these reactions. Of 20 children with extensive local reactions after dose 4, only 4 experienced entire upper arm swelling and 7 had swelling >5 cm after dose 5. These reactions were well tolerated and support revaccination.