Experiences with pertussis vaccination in GDR.

Because of a high pertussis morbidity, compulsory vaccination with DPT-vaccine was started in GDR in 1964. The performing of vaccination for many years has led to a 60--100 fold decrease of morbidity. The well established system of medical care for mothers and babies and the high percent of children who spend their day in nurseries and kindergardens enables satisfying control of the vaccinees. The observed side reactions give no reason to abandon the DPT-Vaccination.