腹泻仍是世界范围内引起发病和导致死亡的主要原因之一。在发展中国家,感染性腹泻是儿童死亡的主要原因,并影响儿童体格和智力正常发育。发达国家中,幼儿腹泻发病率低,但是近期有隐孢子虫属、肠出血性大肠埃希菌、艰难梭菌等腹泻的爆发流行,散发的腹泻为仅次于普通感冒的最常见 Diarrhea remains one of the leading causes of morbidity and mortality in the world. In developing countries, infectious diarrhea is the leading cause of child mortality and affects the physical and mental development of children. In developed countries, the incidence of diarrhea in infants is low, but recent outbreaks of diarrhea such as Cryptosporidium, enterohemorrhagic Escherichia coli and Clostridium difficile are the most common type of diarrhea after common cold