Evaluation on the Efficacy of Expanded Programme on Immunization of Hepatitis B Vaccine of Infants in the Urban Area of Huhehot City

An evaluation of the efficacy of expanded programme on immunization of hepatitis B vaccine of infants in the urban area of Huhehot city was carried out.The annual average reported coverage was 93.76% in 1990～1994.The result of LQAS indicated that the expectant coverage was 90% in 1995.The effective rate of immunization of hepatitis B vaccine was 96.77% in infants.The anti HBs positive rate was decreased to 92.01% in the 1～5 year age group after the immunization of hepatitis B vaccine.It was significantly higher than that rate (5.67%)in the same age group before immunization.(X2=326.36%,P6to 8.9/106in the targeted population after the administration of im-munization.