Analysis on Surveillance Results After Hepatitis B Vaccine Introduced into EPI in Guangdong Province

Objective To evaluate the quality and effort of immunization after Hepatitis B vaccine introduced into EPI in Guangdong Province. Methods The data of routine immunization surveillance report system was analyzed,the survey was carried out to investigate the coverage rate and the first dose timely vaccination rate of Hepatitis B vaccine of 3578 children by the method of two stage probability proportional to size,and serological surveillance was carried out in children under 3 years old from surveillance spot.Results The coverage rate was above 95%,the rate of establishing immunization certificates was 99.05% and the rate of establishing immunization cards was 97.32%.The investigate coverage rate and the first dose timely vaccination rate of Hepatitis B vaccine were 93.07% and 75.01%,respectively.The positive rate of HBsAg and the positive seroconversion rate of anti-HBs after vaccination in children under 3 yers old was 0.84% and 93.44%,respectively.Conclusion The results indicates that the quality of Hepatitis B vaccine immunization is improved after introducing of EPI.But the first dose timely vaccination rate of Hepatitis B vaccine is still low in some areas.What we should emphasis on is improving the first dose timely coverage rate of Henatitis B vaccine,especially in undeveloped areas.