1986年前,我国恙虫病仅知流行于浙江以南地区,主要属夏季型,以黄毛鼠、黄胸鼠、北社鼠为主要宿主动物,以地里纤恙螨为主要媒介。1986年在江苏、山东发生恙虫病流行,属秋冬型。此后,在天津、山西、河北、河南、安徽、北京发行流行,吉林、辽宁、黑龙江有病例报告。以黑线姬鼠、北社鼠、褐家鼠、大仓鼠、朝鲜姬鼠为主要宿主动物;以小盾纤恙螨为主要媒介,可疑的媒介有姬鼠纤恙螨、东方纤恙螨等。 Before 1986, only known endemic tsutsugamushi epidemic in southern Zhejiang Province, mainly in the summer type, with Rattus rat, Rattus flavipectus, Kitasuna rat as the main host animals, in the ground chigger mites as the main medium. In 1986 in Jiangsu, Shandong epidemic of tsutsugamushi, is a type of autumn and winter. Since then, there have been case reports in Tianjin, Shanxi, Hebei, Henan, Anhui and Beijing, Jilin, Liaoning and Heilongjiang. Apodemus agrarius, North Society rats, Rattus norvegicus, Hamster, North Korea Apodemus as the main host animal; with small shield chigger mites as the main medium, suspicious vectors include Apodemus chigger mites, oriental chigger mites and other .