Epidemiological analysis on viral hepatitis in Hangzhou city Xiacheng county from year 1998 to 2007

ObjectiveTo reveal the epidemic characteristics and the trend of incidence of hepatitis in Hangzhou city Xiaeheng county from year 1998 to 2007.The focus is to reveal the difference of the change in the proportion of the types of hepatitis which can be immunized and the type which can not be immunized.Thus it could offer the evidence for decision of the prevention.MethodsDescriptive epidemiology of hepatitis was used.The trend of incidence of hepatitis and the change of the proportion of all types of hepatitis was analyzed by Cox-Stuart test.ResultsThe incidence rate of hepatitis was 124.75 per 100,000 in 1998 and 26.76 per 100,000 in 2007.The difference of incidence of hepatitis in these ten years was significant in statistics through Cox-Stuart test.The difference of incidence rate of hepatitis between adult (15-39,62.16 per 100,000) and children (0-14,4.45 per 100,000) was significant.The proportion of incidence of HEV was also significant by statistics through Cox-Stuart test in these ten years.ConclusionThe trend of incidence rate of hepatitis descended gradually from 1998 to 2007 in Xiacheng county.The difference of incidence of hepatitis at different time and area was non significant.The incidence rate of hepatitis of adult (15-39) is highter than that of the children (0-15).The ascending trend of incidence of HEV proves indirectly that hepatitis A and B was prevented by using HAV and HBV.