Over the several decades, China has been incessantly optimizing control strategies in response to the varying epidemic situations of schistosomiasis. We evaluated continuously the changing prevalence under different control strategies of two villages, Sanlian and Guifan, in China through five phases lasting 37 years. We tested residents, calculated prevalence and discussed change causes. We found the prevalence in Sanlian did not differ significant from that of Guifan (p = 0.18) in 1981, but decreased to 2.66%, much lower than Guifan's 11.25%, in 1984 (p = 0). Besides, prevalence in Guifan increased to 21.25% in 1987, while in Sanlian it rose to 20.78% until 1989. Those data confirmed that praziquantel combined with snail control could better reduce the prevalence. From 1992 to 1994, the prevalence in the two villages displayed downtrends, which showed the World Bank Loan Project worked. From 1995 to 2004, repeated oscillations with no obvious change trend was seen. Since 2005, the prevalence in both villages has shown a significant downtrend (p < 0.05), which suggests the integrated strategy is effective. We considered the control strategies were implemented suitably in the study area under changing social circumstances. Adjusting the strategy in consideration of social transformations is necessary and vital. The experience may be useful for policy making of other epidemic areas with an analogous situation.
[1]Fudan Univ, Sch Publ Hlth, Dept Epidemiol, 130 Dongan Rd, Shanghai 200032, Peoples R China;
[2]Minist Educ, Key Lab Publ Hlth Safety, 130 Dongan Rd, Shanghai 200032, Peoples R China;
[3]Ctr Trop Dis Res, 130 Dongan Rd, Shanghai 200032, Peoples R China;
[4]Inst Prevent & Control Schistosomiasis Anhui Prov, 337 Wuhu Rd, Hefei 230061, Anhui, Peoples R China;
[5]Guichi Antischistosomiasis Stn, West Qiupu Rd, Chizhou 247100, Peoples R China;
[6]Univ Ottawa, Sch Epidemiol & Publ Hlth, 600 Peter Morand, Ottawa, ON K1G 5Z3, Canada
(8.0+极速模式)