CONTROL AND RESEARCH ON SCHISTOSOMIASIS IN CHINA
摘要
Schistosomiasis due to Schistosoma japonicum was once a disastrous parasitic disease in China. Before the founding of the People’s Republic of China and in the earlier phase of the national control programme in the 1950s, prevalence, morbidity and mortality rates due to 5. japonicum infection were considerably high. The endemic areas were found along the Yangtze River and extended southward, covering 10 provinces, the municipality of Shanghai and the autonomous region of Guangxi according to a nation-wide survey made in the 1950s. The number of infected persons and infected cattle were estimated to be 10 million and 1.2 million respectively, and the habitats of the intermediate host, Oncomelania snail, 14 billion m. Population at risk was greater than 100 million (Qian et al; Mao). Tens of thousands of people died every year due to heavy infection of 5. japonicum. Ascitic patients were very weak and lost their working capacity. Woman advanced cases in the child-bearing age were unable to get pregnancy. G