驻粤某部在1993年5月3日至6月22日期间，营区范围先后出现一批原因不明的发热、肌肉酸痛、腹泻等症状的病人共42人。经流行病学调查和血细菌培养，证明为伤寒局部暴发，并查明是水净化系统失效所致。现将卫生学分析结果报告如下。部队概况和发病特点某部驻扎于粤中某地，营区包 During the period from May 3 to June 22, 1993, a batch of 42 people with unknown causes of fever, muscle soreness and diarrhea appeared in the camp area. Epidemiological investigation and blood bacterial culture proved to be local outbreaks of typhoid fever and was identified as a failure of the water purification system. The results of hygiene analysis are reported below. An army profile and the incidence of a certain unit stationed in Guangdong somewhere, camp package