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９９９年３月１１日至４月１１日监测系统常住人群共报告甲乙类传染病１４种，报告丙类传染病６种，甲乙类传染病发病和丙类传染病总的报告发病率均低于它们的预期发病水平，其中丙类传染病总的报告发病水平低于预期最低发病水平。甲乙类传染病共报２２２５例，报告发病率...
From March 11 to April 11, 1999, a total of 14 types of A and B infectious diseases were reported to the resident population of the monitoring system, 6 were reported to be Type C infectious diseases, and the total reported incidence of Type A and B infectious diseases and Type C infectious diseases were all lower than Their expected incidence, of which the total reported incidence of Category C infectious diseases is lower than the expected minimum level of incidence. Class B infectious diseases were reported in 2225 cases, the reported incidence ...