Observation on the Persistance of Immunity in Humans Vaccinated with Hepatitis B Vaccine
Abstract: The immune persistance of three batches of domestic Hepatitis B Vaccine at a dose of 10μg were studied for four years. The results showed that in the same age group there was no difference in immune persistance by sex. The critical protective rate and effective protective rate were higher in the infant groups than in the adult groups. The difference has statistical significance (P<0.05). The protective efficacy of primary vaccination in the infants group dropped to lower than 60 per cent after four years...