腹泻是旅行中常见的医学问题。致病原以大肠杆菌为主,还有沙门氏杆菌、霍乱弧菌等。近年来发现环抱菌与隐孢子虫,也是一种引起腹泻的致病原。虽然它们不是旅行者腹泻的主要致病原,但是,它们引起腹泻的病程较长,尤其对有免疫缺陷的患者,可引起较严重的后果,故须对它们要有进一步的认识。 Diarrhea is a common medical problem in travel. Pathogenic bacteria to Escherichia coli, Salmonella, Vibrio cholerae and so on. In recent years found that bacilli and Cryptosporidium, is also a cause of diarrhea pathogens. Although they are not the major causative agents of traveler’s diarrhea, they cause a longer duration of diarrhea, especially in immunocompromised patients, which can cause more serious consequences, so they need to be further informed.