Analysis on the epidemic dynamics of bacillary dysent cry in Sulchang County of Zhejiang Province from 1950 to 2006

Objective This study aimed at exploring the epidemic dynamics of bacillary dysentery and its influencing factors for proving facts for the development of preventive and controlling measures. Methods Epidemic data on bacillary dysentery in Suichang from 1950 to 2006 wereobtained and systematically analyzed by descriptive epidemiology. Results An accumulative total of17138 cases were reported from 1950 to 2006 and the average annual incidence rate was 158.25/lakhwith the total incidence of the disease decreasing steadily.110 of all the reported cases died with anaverage annual death rate of 1.02/lakh. Prevalence was prominent from August to October, accountingfor 59.94%. Major prevalence occurred in counties and small towns with dense population. Constituent ratio of outbreak cases increased after 1990. Conclusion Prevention and control of bacillary dysentery should be strengthened, especially among students and children. Epidemic surveillance and health education on the disease should be taken seriously with water resources and food safety for schools under constant surveillance.