选择的病例是经皮内反应或环卵沉淀试验阳性,及直肠活检或粪检发现虫卵的慢性感染者。将病人随机分组进行双盲试验,分别用三个不同剂量即1×20毫克/公斤体重、2×20毫克/公斤体重、3×20毫克/公斤体重,每个大组又分服药组和安慰组,均采用一天疗法。医学监测包括心血管、呼吸及神经系统的体征和各种实验室检查等,按规定在治疗前,周内完成,服药后1～3天后复查。 Selected cases are those who are positive for percutaneous or epididymal deposition, and those who are chronically infected with a rectal or biopsy. Patients were randomized to double-blind trials with three different doses, 1 × 20 mg / kg body weight, 2 × 20 mg / kg body weight, 3 × 20 mg / kg body weight, Group, are using a day therapy. Medical monitoring, including cardiovascular, respiratory and nervous system signs and a variety of laboratory tests, etc., according to the provisions before treatment, within weeks, after taking 1 to 3 days after the review.