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该地区于1943年曾有原发性人间鼠疫发生和流行,间隔42年后于1985年经监测发现鼠疫动物病。鼠疫动物病流行时疫点黄鼠密度1.15只/公顷,平均蚤指数0.92匹,鼠疫动物病流行时间结构从1985年4月发现到1986年6月止共流行14个月,流行范围达3021公顷,流行强度1985年鼠体检菌阳性率0.66%,血凝阳性率2.54%,1986年血凝阳性率1.18%,流行因素主要是黄鼠种群重新组合,空间拥挤度增加,激发小疫灶的活动。
In 1943, the area had seen the occurrence and prevalence of primary human plague. An epidemic of plague was discovered after surveillance in 1985 after an interval of 42 years. The prevalence of plague zoonosis Ephemeral ground squirrel density of 1.15 / hectare, the average flea index of 0.92 horses, plague animal disease epidemic time structure found in April 1985 until June 1986 a total of 14 months prevalent, the epidemic range of 3021 hectares, Epidemic intensity In 1985, the positive rate of rat inoculation was 0.66%, the positive rate of hemagglutination was 2. 54%. The positive rate of hemagglutination in 1986 was 1.18%. The epidemic factors were mainly the reassortment of the population of Chrysolophus and the increased degree of spatial crowding, which stimulated the activity of the small epidemic.