Classification and Analysis of Prevalence on Hepatitis in Beijing 1990～1997

The data showed that the incidence rate of hepatitis in Beijing was decreased sharply, from 106.44/10 6 in 1990 to 46.46/10 6 in 1997. The hepatitis type A and hepatitis type B in children was decreased year by year, but the hepatitis type nonA nonB and unspecified were increased year after year. This result showed that the control of hepatitis made a good effect in Beijing. The authors suggested that the focux of hepatitis control should be changed into the types other than type A and type B.