Abstract:

Objective To evaluate the effectiveness of the medium-and-long-term program of prevention and control of schistosomiasis in Nanjing City from 2004 to 2015, so as to provide evidences for following strategies in prevention and control of schistosomiasis. Methods  The data were collected and statistically analyzed on the endemic schistosomiasis in Nanjing City from 2004 to 2015. Results  Areas with snails tended to decline in general throughout Nanjing after 2004, with a decline rate of 63.54%(decrease to 1 713.88hm2 in 2015 from 4 700.25hm2 in 2004). The decrease of infected snails was significant, and no positive snail habitats were detected in Nanjing area after 2009. Dipstick dye immunoassay(DDIA) indicated that the population infection was dropped to 0.88% in 2015 from 4.04% in 2004, and no acute schistosomiasis occurred in 10 years. There was no positive case by stool examination since 2008(exclusive in 2012), and no livestock infection after 2006. By 2015, seven of 11 administrative counties and districts under Nanjing City reached the criteria for transmission interruption of the schistosomiasis, and 4 counties and districts were up to the criteria of schistosomiasis infection control. Conclusion  The endemic situation in Nanjing City has been effectively controlled through comprehensive measures for control of the snail prevalence and infectious sources, suggesting that the medium-and-long-term program has been well fulfilled.

Key words: Schistosomiasis, Prevention and control results, Oncomelania hupensis, Nanjing City