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Table 3 Changes of Oncomelania hupensis snail in the 107 villages in a pilot control program of Jiangsu Province, from 2003 to 2008

From: Effect of an integrated control strategy for schistosomiasis japonica in the lower reaches of the Yangtze River, China: an evaluation from 2005 to 2008

Year Snail habitat (hm2) Infected snail habitat (hm2) No. snails dissected No. infected snails Infection rate of snails (%) No. villages with infected snails
2003 7243.06 2173.93 585298 1808 0.31 80
2004 7625.23 2130.53 597783 950 0.16 90
2005 7701.07 1767.70 551843 705 0.13 60
2006 5887.96 1444.34 344905 735 0.21 44
2007 4487.75 802.73 296868 254 0.09 41
2008 3775.26 124.19 295384 68 0.02 20