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1985年11月21～30日,武冈县城关镇部分单位、学校和街道突然发生大批腹泻病人。发病集中在饮用自来水者。调查饮用自来水人数5673人,发病806例,发病率14.21％。男性449人、女性357人,男:女=1.26:1。年龄3个月～84岁,主要集中在16岁以上。 11月21日开始出现病人,25～27日出现大批病人(分别为140、233、154),26日达最高峰后发病骤降,30日发病已很少。
From November 21 to November 30, 1985, a large number of diarrhea patients suddenly appeared in some units, schools and streets in Chengguan Town, Wugang County. The incidence of concentrated drinking water in those who. The number of drinking water survey 5673 people, 806 cases of onset, the incidence rate of 14.21%. 449 males and 357 females, males: females = 1.26: 1. Age 3 months to 84 years old, mainly in the 16-year-old above. Patients started to appear on November 21, with a large number of patients on the 25th to 27th (140, 233, 154, respectively). After reaching the peak on the 26th, the incidence dropped sharply and the incidence on the 30th was very low.