感染性腹泻是一组发病率很高的胃肠道感染性疾病。全世界每年约发病30～50亿人次,在发展中国家每年约引起500～1000万患者死亡。近十余年,对感染性腹泻的病因、发病机制和分类方而的研究有较大进展。感染性腹泻的病因,包括细菌、病毒、真菌和寄生虫等,其中以细菌最多见,病毒次之。 Infectious diarrhea is a group of high incidence of gastrointestinal infectious diseases. Approximately 3 to 5 billion people worldwide make an annual incidence of about 500 to 10 million deaths in developing countries each year. In the recent ten years, great progress has been made in the research on the etiology, pathogenesis and classification of infectious diarrhea. The causes of infectious diarrhea, including bacteria, viruses, fungi and parasites, among them the most common bacteria, the virus second.