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本文对上海市北郊的宝山区建区以来9年甲、乙类传染病疫情进行动态分析。结果表明,宝山区甲、乙类传染病1989~1994年总发病率在40010万上下波动,平均3970310万;1995~1997年下降到30010万以下,平均2614610万。两个?
This article analyzes the epidemic situation of A and B infectious diseases for 9 years since Baoshan District was built in the northern suburb of Shanghai. The results showed that the total incidence of A and B infectious diseases in Baoshan District fluctuated from 400 to 110,000 in 1989 to 1994, with an average of 3970310 million. From 1995 to 1997, the total incidence of infectious diseases dropped below 300110 with an average of 26146 10 million. Two?