呼盟1955年牙克石市图里河镇发生首例ＨＦＲＳ患者,历经50年代暴发、60～70年代相对静止和80年代多发3个阶段,进入90年代疫区不断扩大,局部地区有时疫情暴发。现将呼盟1956～1998年ＨＦＲＳ流行病学分析如下。材料与方法　(1)1956～1998年全盟疫情资料;(2)人群血清学调查:采集 In 1955, the first case of HFRS occurred in Tu Lihe Town, Yakeshi City. After 50 years of outbreak, relatively still from the 60s to the 70s and three stages of multiple in the 1980s, the epidemic area expanded continuously in the 1990s and outbreaks sometimes occurred in some areas . Now Humeng HFRS 1956 ~ 1998 epidemiological analysis is as follows. Materials and methods (1) epidemiological data of the entire League from 1956 to 1998; (2) serological survey of the population: collection