隐孢子虫和环孢菌与旅行者腹泻

Cyclospora, Cryptosporidum and Diarrhea of Traveller

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 seems to be a common problem in travel medicine. The pathogens of travel diarrhea are various , mainly include enterotoxigenic E coli (ETEC), salmonella and parahaemolyticus. Cyclospora and Cryptosporidium only recently have been recognized as possible causes of traveler s diarrhea. Although they are not major pathogens of diarrhra in international travelers, but Cyclospora and Cryptosporidium cause persistent watery diarrhea, and more serious symptoms in HIV - infected patients. Therefore it is important to take Cyclospora and Cryptosporidium into account in the differential diagnosis.