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1962年10月至1963年1月期间,在山东省西南部某湖濱地区执行生产任务的部队中,散在性发生5名热性病人,患者均为青年战士,其职务为:一名担任放鸭工作,一名为生产队的班长,一名为汽车驾驶员,一名为炊事班长,另一名为生产办公室下士,均直接或间接地参加了农业劳动(突击种麦)。病前均有在该地区野外露宿或住人字形草蓬、睡地铺(下垫野草)的历史,据了解该地野鼠较多,当地居民中也有类似病人散在发生。地理景观特点:该地区为湖濱低洼地带,河流纵横,杂草丛生,近湖者多为半开垦荒
From October 1962 to January 1963, five thermal patients randomly assigned to perform the task of production in a lakeshore area in southwestern Shandong Province were all young soldiers. Their positions were as follows: Work, a squad leader for the production team, a driver for the car, a squad leader for the cook and a corporal for the production office, participated directly or indirectly in agricultural work (assault wheat). Before the illness, there was a history of sleeping in the fields or sleeping in the herringbone grass and sleeping ground (laying weeds) in the wild. It is known that there are many wild rats in the area and there are similar patients scattered among the local residents. Geography and landscape features: the area is low lying lake, the river aspect, overgrown with weeds, mostly lakes are mostly reclaimed land