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1990年8月12日,××幼儿园发生一起由宋内氏痢疾杆菌引起的菌痢暴发。该幼儿园暑托班共有幼儿54名,保教人员7名,大修房屋的外地建筑工人5名。全园发病21人,罹患率为31.82%;带菌10人,感染率为48.48%。8月12日出现首例病人,15日发病达高峰(16例),随后疫情迅速下降、平息,持续5天。这是一次易感者在一个短时间内暴露于共同的传染源及传播途径而引起的暴发流行。经逐日分析8月8日～13日缺席幼儿的感
On August 12, 1990, an outbreak of bacillary dysentery caused by Shigella dysenteriae in ×× kindergarten occurred. The kindergarten summer nursery classes a total of 54 young children, Paul instructors 7, overhaul of the housing field construction workers 5. The whole hospital incidence of 21 people, the attack rate was 31.82%; carrying 10 people, the infection rate was 48.48%. The first patient appeared on August 12, the peak incidence on the 15th (16 cases), followed by a rapid decline in the outbreak, subsided for 5 days. This is a contagious outbreak caused by a vulnerable person exposed to a common source of infection and transmission over a short period of time. After a daily analysis of August 8 to 13 absent children’s flu