Analysis on effect of utilizing hepatitis B vaccine for 10 years in Hainan Province

Objective In order to evaluate the effect of utilizing hepatitis typo B vaccine for 10 years in Hainan province to provide scientific basis for drawing up strategy of controlling hepatitis type B. Methods 5 cities/counties were sampled according to random rule. 3 sites were sampled according to different economic level in every city/county. 30-,50 children who were 1-10 years old were investigated in every site. Their immunization history of hepatitis type B vaccine and HbsAg carrying rate were investigated and the result was compared with the data of epidemiology survey in 1992 in Hainan province. Results 1552 children were investigated. The results showed that The immunization coverage was increased to 92.3% from 0 in the same area of 1992. The HbsAg carrying rate was reduced to 2. 11% from 16. 2%, The immunization coverage of hepatitis type B vaccine and HbsAg carrying rate were different in different economic level area. Conclusion spreading immunization of hepatitis typo B vaccine of newborn babies was the most effective measure to reduce infection rate of hepatitis type B virus in Hainan province. The economic level was the major influencing factor of immunization coverage of hepatitis type B vaccine and HbsAg carrying rate in Hainan province. Recommendation Improving immunization coverage and in-time rate of hepatitis type B vaccine and ensuring safety injection were the important strategy in order to realize the aim for controIling hepatitis type B.