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西藏是以喜马拉雅旱獭(简称旱獭)为主要储存宿主的鼠疫自然疫源地。自1966年首次从日喀则地区仲巴县隆格尔区日西乡鼠疫患尸中分离到鼠疫菌,并证实鼠疫自然疫源地的存在,至今,疫源地面积逐年扩大,已发现鼠疫疫源县48个,遍布全区7地(市),疫源乡总面积达257 800 km2,占全区总面积的21%。46年间17个疫源县的动物鼠疫波及人间,共发生人间鼠疫22起,发病120人,死亡75人,平均死亡率达62.5%。
Tibet is a natural foci of plague originating from the Himalayan marmot (referred to as the Marmot) as the main storage host. Since 1966, Yersinia pestis was isolated from the plague plague in the Xixiang Township, Longgeer District, Zhongba County, Shigatse Prefecture for the first time and confirmed the existence of plague natural foci. So far, the area of foci has been expanded year by year. It has been found that plague origin 48 counties, all over the region 7 (city), the total area of 257 800 km2 foci, accounting for 21% of the total area of the region. In the 46 years, the animal plague in 17 epidemic counties spread to the world. There were 22 human plague cases, with 120 cases and 75 deaths, with an average mortality rate of 62.5%.