1986年7月我国某地区从长爪沙鼠(下称沙鼠)分离出鼠疫菌。8月发生人间腺鼠疫两例。至12月共检出疫鼠4种61只,疫蚤2种13组,疫区438km~2,波及6个乡(镇)。该地区面积7294km~2,人口29.3万。疫区大部处于荒漠草原,仅东端一小部处于干草原上。该地1902—1945年流行过9次人间鼠疫,其中7次腺、 July 1986 from a region of our country gerbils (hereinafter referred to gerbil) isolated from Yersinia pestis. Two cases of human gland plague occurred in August. By December, a total of 61 flocks of four kinds of epidemic animals and two fleas of 13 kinds and 13 epidemic groups were found. The epidemic area was 438km ~ 2, affecting 6 townships (towns). The area of ​​7294km ~ 2, population 293000. Most of the affected areas are in desert steppes, with only a small part of the east end in the steppe. Nineteen human plague epidemics took place in 1902-1945, of which seven were glandular,