Influence of Hepatitis B Vaccination on the Epidemiological Features of Hepatitis B

[Objective]To learn the epidemiological features of hepatitis B before and after vaccination in recent 16 years and provide basis for establishing new preventive countermeasures.[Methods]Analysis was made on the report data of epidemiological situation of hepatitis B in Gulou District of Nanjing during the period of 1990～2005.[Results]Since Hepatitis B vaccination was included into planned immunization in 1992,the coverage of hepatitis B vaccination among newborn babies reached above 99%.Vaccination changed the epidemiological features of hepatitis B;the morbidity of hepatitis B showed a decreasing trend,especially among children under the age of 10.[Conclusion]Vaccination is an effective approach for preventing and eliminating hepatitis B;vaccination range should be widened in order to reduce the morbidity of hepatitis B.