Horwitz M A, Pollard R A, Merson M H, Martin S M
Am J Public Health. 1977 Nov;67(11):1071-6. doi: 10.2105/ajph.67.11.1071.
In September 1974, the largest outbreak of foodborne salmonellosis ever reported to the Center for Disease Control--affecting an estimated 3,400 persons--occurred on the Navajo Nation Indian Reservation. The responsible agent was Salmonella newport and the vehicle of transmission was potato salad served to an estimated 11,000 persons at a free barbecue. The cooked ingredients of the potato salad had been stored for up to 16 hours at improper holding temperatures. The magnitude of the outbreak allowed us to study secondary transmission by calculating the rates of diarrheal illness during the 2 weeks following the outbreak in persons who did not attend the barbecue and by examining the results of stool cultures obtained after the outbreak. We found no secondary transmission. We conclude that a health official should monitor food preparation and service at large social gatherings and that person-to-person transmission of salmonellosis probably does not normally occur even in settings considered highly conductive to cross-infection.
1974年9月，向疾病控制中心报告的有史以来最大规模的食源性沙门氏菌病暴发——估计影响3400人——发生在纳瓦霍族印第安人保留地。致病原是新港沙门氏菌，传播媒介是在一次免费烧烤活动中提供给约11000人的土豆沙拉。土豆沙拉的熟制食材在不当的储存温度下存放了长达16小时。此次暴发的规模使我们能够通过计算未参加烧烤活动的人在暴发后2周内的腹泻病发病率，并检查暴发后获得的粪便培养结果，来研究二代传播情况。我们未发现二代传播。我们得出结论，卫生官员应监测大型社交活动中的食品制备和供应情况，并且即使在被认为极有利于交叉感染的环境中，沙门氏菌病的人际传播通常可能也不会发生。
