Epidemic Analysis of Viral Hepatitis During 1992-2001 in ZHoushan City

ObjectiveTo fine out the pr evalent trend of viral hepatitis in Zhoushan city.MethodsData from reported notifiable disease dur ing 1992-2001 in Zhoushan were processed and analy zed.ResultsThe total incidence rate of viral hepaitis came down from 410.95/10⁵ in 1992 to 143.98/10⁵ in 2001;Therein to,the incidence rate of viral hepatitis Acame down from 77.84/10⁵ in 1992 to 5.48/10⁵ in 2001.That of viral hepatits Bcame down from 176.99/10⁵ in 1992 to 98.70/10⁵ in 2001,Whereas,its proportion was still ascending every year,it went up from 42.65% to 68.55% during 1992-2001.Seasonality was noticeably and most of the cases of viral hepatitis concentrated in January and March-August.ConclusionThe incidence rate of viral hepatitis showed a descending trend.viral hepatitis Bwas the major proportion of all vial hepatitis.