据统计每年有3亿人往来于国际之间。在这些人群中腹泻发生率为0.6～94%。在1,200万从工业发达国家赴发展中国家的旅行者中,腹泻成了在外逗留时最常见的健康问题。但迄今为止的许多流行病学研究,只局限于对其中部份人和个别地区发生腹泻的调查。而本文作者则对赴世界各地旅行者发生腹泻的情况(约占国际旅行者总数的70%以上)进行了研究。 According to statistics, 300 million people travel between different countries each year. The incidence of diarrhea in these populations is 0.6 to 94%. Of the 12 million travelers who travel from industrialized countries to developing countries, diarrhea is the most common health problem when staying out. However, many epidemiological studies to date have only limited the investigation of diarrhea in some of them and in some areas. However, the authors studied diarrhea in travelers around the world (accounting for more than 70% of international travelers).