在发展中国家旅行,腹泻是最为常见的医疗问题。世界上大约50％的游客在发展中国家旅行时染患腹泻,其病情发展可能会极为严重。该病一般多发于墨西哥、加勒比海地区、非洲、拉丁美洲和亚洲的大部分地区,因此需引起旅行者的注意。旅行者染患腹泻的高危因素包括不良饮食习惯、胃酸过少、胃切除史、严重复发性腹泻病史、免疫缺陷疾病以及年轻人中常见的相对的肠道免疫 Traveling in developing countries, diarrhea is the most common medical problem. About 50% of the world’s tourists are suffering from diarrhea while traveling in developing countries and their disease development may be extremely serious. The disease usually occurs in Mexico, the Caribbean, Africa, Latin America and most parts of Asia, it needs to attract the attention of travelers. Traveler risk factors for diarrhea include poor dietary habits, hypochlorhydria, history of gastrectomy, a history of severe recurrent diarrhea, immunodeficiency disease, and the relative intestinal immunity commonly seen in young adults