公共卫生活动缺乏足够的制度化是发展中国家控制传染性疾病的一个主要限制因素。血吸虫病控制策略现在侧重于对病人的防治,而不强调消灭感染或阻断传播。策略的转变基于如下认识:严重的泌尿系统和肝脾疾患与虫卵的大量排出有关,通常患病率和感染度较高的儿童使人群虫卵排出量上升,并成为构成传播的最主要因素。故对儿童的治疗既可减少组织中的虫卵数以减轻病症,又可减少虫卵排出而降低传播强度。随着高效、低毒、低剂量的新药吡喹酮的问世, The lack of adequate institutionalization of public health activities is a major limiting factor for developing countries in the control of communicable diseases. Schistosomiasis control strategies are now focused on the prevention and treatment of patients, rather than emphasizing the elimination of infection or the interruption of transmission. The shift in strategy is based on the recognition that severe urological and hepatosplenic disorders are associated with massive excretion of eggs and that children with a higher prevalence and higher prevalence increase the population of egg excretion and are the most important contributors to transmission . Therefore, the treatment of children can reduce the number of eggs in the organization to reduce the disease, but also reduce the egg discharge and reduce the intensity of transmission. With the advent of praziquantel, a new drug with high efficiency, low toxicity and low dose,