小儿感染性腹泻(简称腹泻)是仅次于呼吸道感染,居第二位的常见多发病。每年世界上有5亿多小儿发生腹泻,病死率在1～4%,东南亚及非洲地区,腹泻在小儿是第一位的死亡原因。腹泻在我国是发病率高病死率低的一种疾病。五十年代初病死率为8%左右,随着腹泻研究的进展,迄今已降至1%以下。1981年在石家庄市召开全国小儿 Infectious diarrhea in children (referred to as diarrhea) is second only to respiratory infections, ranking second in the common multiple disease. More than 500 million children suffer diarrhea each year in the world, with a mortality rate of 1-4%. Diarrhea is the first cause of death in children in Southeast Asia and Africa. Diarrhea is a disease with high morbidity and mortality in our country. The case fatality rate in early fifties was about 8%, with the progress of diarrhea research so far dropped below 1%. 1981 held in Shijiazhuang City, the nation’s children