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某部队于1961年初进驻某地区执行农业生产任务时,于当年4至6月间,陆续发生一批原因不明性高热患者,主要情况如下:一般情况:该地区四面环山,位于海拔1,355公尺。除平原地外,就是戈壁、沙漠、草原和森林等,为人烟稀少的地方。一年四季风沙大,气温高,湿度小,属于大陆性气候,日温差一般为10～20度,年降雨量极少。居民生活主要依靠农业和牧业,农民多饲养牛、羊为主要家畜。田野间有野免、鼠及汗獭,曾在鼠类及汗獭体内检获蜱、蚤,
When a unit stationed in a certain area in early 1961 to carry out agricultural production tasks, a group of patients with unknown causes of fever were successively reported from April to June of that year. The main situations are as follows: General Situation: The area is surrounded by mountains and is located at an altitude of 1,355 meters . In addition to plains, is the desert, grasslands and forests, sparsely populated areas. The wind and sand throughout the year, large temperature, humidity, belong to the continental climate, daily temperature difference is generally 10 to 20 degrees, the annual rainfall is minimal. Residents mainly rely on agriculture and animal husbandry, farmers feed more cattle and sheep as the main livestock. Wild field between the field, rats and xtremus, who had seized in the murine and otter ticks, fleas,