本文对1993.5～11到达Belize后头8周内发生急性腹泻的英国士兵,作随机治疗研究。凡24小时内有1次或1次以上不成形大便者,即诊断为腹泻。腹泻后24h内,随机给予单剂500mg环丙沙星或安慰剂。受试者均需记录大便次数、性状和伴随症状。剔除发热(>38.5℃)和严重脱水者。500位士兵中有180例发生急性腹泻,占36％。内88例(49％)在第1次稀便后即来求诊,并开始服药。88例 This article is a randomized study of British soldiers who developed acute diarrhea within the first 8 weeks of Belize, from May 11 to May 11, 1993. Where there is one or more than 24 hours without forming stool, which is diagnosed as diarrhea. Within 24 hours after diarrhea, a single dose of 500mg ciprofloxacin or placebo was given randomly. Subjects need to record stool frequency, traits and concomitant symptoms. Remove fever (> 38.5 ℃) and severe dehydration. 180 out of 500 soldiers experienced acute diarrhea, accounting for 36%. 88 patients (49%) were admitted to the hospital after the first stool. 88 cases