作者按双盲、随机、对照设计,用氟哌酸(nor-floxacin)与安慰剂对25例无症状的慢性伤寒杆菌携带者作了疗效、安全性和耐受性比较。临床资料参与者均为大便或胆汁伤寒杆菌培养阳性持续达12个月以上。有过敏体质、患严重系统性疾病、合并感染、肾功能中至重度不全和孕妇均除外。治疗前均作口服胆囊造影、静脉胆囊造影或胆囊 In a double-blind, randomized, controlled trial, the authors compared the efficacy, safety and tolerability of 25 asymptomatic Chronic Salmonella typhimurium carriers with nor-floxacin versus placebo. Clinical data participants were stools or bile typhoid bacilli culture positive for 12 months or more. Have allergies, suffering from serious systemic diseases, co-infection, renal insufficiency and pregnant women were excluded. Before treatment for oral gallbladder, intravenous cholecystography or gallbladder