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1983年11月上旬,广州市郊区三元里公社长虹大队,发热病人突然增多,经流行病学、病原学及血清学调查,证实为一起伤寒食物型暴发流行。现将调查结果报告如下: 一、流行病学调查: 1.发病情况:市郊三元里一带常有伤寒病散发,但近十余年无暴发流行。1983年10月底,长虹大队一农家在外买回烧肉等熟食,于家中宴客80人,餐后7天起,有23人相继发病,发病率为28.75％。其中主人家兄妹2人,邻居一家5人聚餐后全部发病;另一邻居,3人聚餐2人发病;还有一家4人聚餐2人发病。其余发病者皆有聚餐史。如一同桌聚餐者11人,均无家庭关系,有8人先后发病,其中3人住院治疗。而病家所在地,无聚餐史者均无发病。 2.发病时间:首发病例11月5日,最后一例发病于12月10日,全程共35天,发病高峰在11月上、中旬(15天内)共发病16例,占总发
In early November 1983, the Changhong Brigade, a commune of Sanyuanli in the outskirts of Guangzhou, suddenly increased in number of febrile patients. The epidemiological, etiological and serological investigations confirmed the prevalence of typhoid food-type outbreaks. The survey results are reported as follows: First, the epidemiological survey: 1. Incidence: Sanyuanli suburbs often have typhoid fever distribution, but no outbreak in the past ten years. By the end of October 1983, a farmer in Changhong Brigade purchased cooked food such as roasted pork and bought banquet 80 people at home. After the meal 7 days, 23 people were successively infected with the incidence of 28.75%. Among them, 2 were from the sibling of the host family and 5 were from the neighbor’s family after the meal; 2 from the other neighbors and 3 from the group; 2 from the 4-person group. The rest of the incidence of all have a meal history. For example, there were 11 people who had dinner at the same table, none of them had any family relations, and 8 of them had their illness one after another, of which 3 were hospitalized. The location of the sick, no history of meals without any incidence. 2. Onset time: the first case On November 5, the last case of onset on December 10, the whole 35 days, the peak incidence in November, mid (15 days) were 16 cases of disease, accounting for the total