Survey of schistosome infection in humans livestock and snails in Heqing county in 2001～2011

Objective To reveal the correlation of the Schistosoma infection rate of human and raised livestock with the distribution of snails or the status of snails with Schistosoma in endemic area of Heqing county.Methods There was Oncomelania distribution areas of 963 273 m2 left in Heqing County in 2011 and the schistosoma infection rate of human was 0.003%.The data of the snail eradication and control in the schistosomiasis endemic areas from 2001 to 2011 were collected and analyzed.Results The results showed Schistosoma infection rate of human was correlated with snails natural infection rate but not correlated with the 6 indexes including snail distribution areas,percentage of oncomelania distribution areas,the occurring rate of frames with living snail,positive Oncomelania distribution areas and the average density of living snails with schistosomiasis in Heqing County.There was relationship of the Schistosoma infection rate of raised livestock with the three indexes of the average density of living snails,positive oncomelania distribution areas,oncomelania distribution areas with schistosomiasis,having no relationship with oncomelania distribution areas,percentage of oncomelania distribution areas,the occurring rate of frames with living snail,snails natural infection rate.There was no relationship between the schistosomiasis infection rate of human and livestock among 2001 to 2011.Conclusion To research intensively into the relationship of the Schistosoma infection in human,livestock and snails will help guide the work of prevention and treatment of schistosomiasis.