目前世界上流行血吸虫病的国家有76个,受威胁的人口约6亿,患病者有2亿,约占世界总人口的5％。血吸虫病不仅是一种严重危害人类健康的寄生虫病,而且还可以并发肿瘤。埃及血吸虫病和膀胱癌发生的关系甚为密切,其并发率可达80％以上。长尾猴和卷尾猴感染埃及血吸虫,经半年和一年后可发生膀胱癌。根据地理病 At present, there are 76 countries in the world suffering from schistosomiasis. The threatened population is about 600 million, and 200 million people are sick, accounting for about 5% of the world’s total population. Schistosomiasis is not only a parasitic disease that seriously jeopardizes human health, but also can be associated with tumors. The relationship between schistosomiasis in Egypt and the occurrence of bladder cancer is very close, and its concurrency rate can reach more than 80%. Vervet monkeys and capuchin monkeys are infected with schistosomiasis, and bladder cancer can occur after six months and one year. According to geographical diseases