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南通市是病毒性肝炎高发地区，流行年甲肝占７０％～８５％，春季（３～６月份）发病占全年的４１．４４％～４７．６５％。调查发现，人群免疫水平低下是我市甲肝流行的基本条件，生食海产品、接触及外出就餐是主要传播因素；１９９４～１９９７年通过遏制甲肝春季高峰对策和措施的落实，发病率比前４年同期下降７７．５２％，说明该对策具有针对性和科学性。
Nantong is a high incidence of viral hepatitis, the prevalence of 70% to 85% of hepatitis A, the spring (March to June) accounted for 41.44% to 47.65% of the annual incidence. The survey found that the crowd immunization level is the basic conditions for the epidemic of hepatitis A in our city, raw seafood, contact and eating out are the main transmission factors; from 1994 to 1997 through the suppression of the peak of the measures and measures to implement the peak of hepatitis A, the incidence rate than the previous 4 years A decrease of 77.52% over the same period, indicating that the strategy is pertinent and scientific.