黑龙江省有广大的森林地带,森林脑炎病例报告较多,被列为黑龙江省法定报告的乙类传染病之一。现将黑龙江省森林脑炎的发病情况分析如下。黑龙江省森林脑炎(森脑)最早发现于1942年,从1952年起有正规记载,1952～1998年发病最高的年份是1952年,全省发病率达317/10万,病死率为2572% Heilongjiang Province has a large number of forest areas, forest encephalitis more cases reported, was classified as Heilongjiang Province statutory report of one of the B infectious diseases. Now the incidence of forest encephalitis in Heilongjiang Province is analyzed as follows. The forest encephalitis in Heilongjiang Province was first discovered in 1942, and it has been formally recorded since 1952. The highest incidence in 1952-1998 was 1952, with the province’s incidence reaching 317 / 100,000 and the case fatality rate was 2572%