血吸虫病是一种严重危害人类身体健康的寄生虫病。目前 ,全世界有 6亿人受威胁 ,近 2亿人受感染 ,每年可致 2 0 0万人死亡。在防治措施和策略上 ,1991年 WHO血吸虫病专家委员会第四次会议针对各国流行特点提出了在大多数国家应通过化疗来达到疾病控制 (减少发病 ,尤其是控制急 Schistosomiasis is a parasitic disease that seriously affects human health. At present, 600 million people are threatened in the world and nearly 200 million people are infected, killing 20 million people each year. In the prevention and control measures and tactics, the fourth meeting of the WHO Expert Committee on Schistosomae Infection in 1991 proposed that in most countries, the disease control should be achieved through chemotherapy in the majority of countries (to reduce the incidence and especially to control the acute