１９９７年８月５日我县南阳镇某村村民，因婚事６４５人聚餐后２０天内，有８１人因患伤寒而发病，发病率为１２５６％（８１／６４５）。经流行病学调查及病原学检验，证实是由慢性带菌者而引起的食物型伤寒暴发。本次聚餐活动中直接从事食品加工与操作人员共１５人，... On August 5, 1997, 81 villagers in a village in Nanyang Town of our county died of typhoid fever within a period of 20 days after having dinner with 645 people. The incidence rate was 1256% (81/645). Epidemiological investigations and etiological tests confirmed that food-borne outbreaks were caused by chronic carriers. The dinner event directly engaged in food processing and operations staff a total of 15 people, ...