ABSTRACT
Objective To evaluate the cost-effectiveness of comprehensive schistosomiasis control measures with focus on total removal of cattle and sheep in Juanshan District,Yueyang City.Methods The schistosome infection status of human,cat-tle,sheep and Oncomelania hupensis snails and costs of control measures were gathered during the period of 2006 to 2016.The costs for different periods and cost-effectiveness ratios were calculated.Results The prevalence of schistosome infection in resi-dents in the pilot villages decreased from 3.44% in 2006 to 0 in 2016.The annual costs of schistosomiasis prevention and control were 4 708 500 yuan from 2006 to 2008,5 094 700 yuan from 2009 to 2012 and 9 522 700 yuan from 2013 to 2016.The cost-ef-fectiveness analysis showed that the average annual cost of reduction in the residents'infection rate by 1% were 79 500 yuan from 2006 to 2008,101 200 yuan from 2009 to 2012,and 95 200 yuan from 2013 to 2016,respectively. Conclusion The comprehensive schistosomiasis control strategy with focus on cattle and sheep removal in Junshan District is cost effective, which could be extended to other lake and marshland schistosomiasis endemic areas.
ABSTRACT
s] Objective To evaluate the effect of comprehensive schistosomiasis control measures with focus on total removal of cattle and sheep in Junshan District,Yueyang City. Methods The retrospective review and field survey were implemented in the pilot villages in Junshan District. The data of Schistosoma japonicum infection status of human,cattle,sheep and Oncome-lania hupensis snails,and density of snails were gathered and modeled in the period of 2006 to 2016. Results The prevalence of schistosome infection in residents in the pilot villages decreased from 3.44％ in 2006 to 0.59％ in 2012(F = 14.501,P =0.013). After removal of all the cattle and sheep in 2013,the prevalence of schistosome infection in the residents decreased to zero in 2016(F=14.148,P=0.033). The density of living snails decreased from 0.8833/0.1 m2 in 2006 to 0.3088/0.1 m2 in 2012(F=76.250,P=0.005). Conclusion The comprehensive schistosomiasis control strategy with focus on cattle and sheep removal is remarkably effective.