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分析讨论这次的流行病曾被初诊为伤寒、斑疹伤寒、瘧疾及腺鼠疫。但肥达氏反应、外斐氏反应OX_2、OX_(19),以及瘧原虫检查均阴性;患者淋巴结虽肿大,但不化脓,与周围组织不粘连亦与腺鼠疫有别,故被逐一否定。此次流行具有以下特点:1.明显的季节性:发病始于6月,终于8月,以7月为高峰。2.发病与野外活动密切相关:患者在发病前二周许均曾在野外活动并有与草地接
Analysis and discussion The epidemic was first diagnosed as typhus, typhus, malaria and bubonic plague. However, the Wadda reaction, Oxi2, OX_ (19) and Plasmodium were all negative. Although the lymph nodes were swollen but not purulent, they were different from the surrounding tissues and were also different from the bubonic plague . The epidemic has the following characteristics: 1. Obvious seasonal: onset began in June, and finally in August to July as the peak. 2 incidence and field activities are closely related to: patients in the two weeks before the onset of Xu have been in the field activities and have access to grass