Shield J, Baumer J H, Dawson J A, Wilkinson P J
Department of Child Health, Plymouth General Hospital, U.K.
J Infect. 1990 Nov;21(3):297-301. doi: 10.1016/0163-4453(90)94053-3.
Eleven children aged 7 to 8 years from one school class developed diarrhoea and vomiting after an educational visit to a dairy farm. Three required hospital admission and intravenous fluid replacement for dehydration. Cryptosporidium oocytes were found in the faeces of these three children and from one classmate when the remainder of the class was tested between 16 and 21 days after the visit. At the farm some children tasted pelleted cow feed, silage and dried milk powder. A case-control study showed a significant correlation between diarrhoea and the tasting of silage and pelleted feed. Guidance on the safe conduct of educational visits to farms is given.
一个班级的11名7至8岁儿童在参观一家奶牛场进行校外考察后出现腹泻和呕吐症状。其中三人因脱水需要住院并接受静脉补液治疗。在参观后的16至21天对该班级其他同学进行检测时，在这三名儿童以及一名同学的粪便中发现了隐孢子虫卵囊。在农场时，一些儿童品尝了颗粒状牛饲料、青贮饲料和奶粉。一项病例对照研究表明，腹泻与品尝青贮饲料和颗粒状饲料之间存在显著关联。文中给出了关于农场校外考察安全 conduct 的指导建议。 （注：原文中“conduct”这里可能是想说“行为、做法”之类意思，不太明确准确含义所以直接保留英文，你可根据实际情况进一步完善）
