婴幼儿腹泻近10余年来有显著的变化,主要表现在:(1) 在发病季节方面,以前多发生在夏秋季炎热月份,而近年来大多在秋末冬初较寒冷季节流行性发生,夏季发病者明显减少;(2) 以前营养状态较差的婴幼儿易发病,近年来营养状态较好者多;(3) 从临床表现来看,过去婴幼儿腹泻常呈缓泻型,即便次逐渐增多,以至出现中毒症状,大便呈黄色或黄绿 Infant diarrhea in the past 10 years, there are significant changes, mainly in: (1) in the onset of the season, the former occurred in the hot summer and autumn months, and most of the late autumn and winter in early winter epidemic occurred more colder, summer onset (2) infants and young children with poor nutritional status in the past were more likely to develop disease and had better nutritional status in recent years; (3) from the clinical manifestations, infantile diarrhea often showed laxative type in the past, As symptoms of poisoning, stool was yellow or yellow-green