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Table 3 Results of snail survey in the five PLADs during 2005–2016

From: Surveillance on schistosomiasis in five provincial-level administrative divisions of the People’s Republic of China in the post-elimination era

Year Areas conducted snail survey (hm2) Areas with living snails (hm2) Area of new snail habitats (hm2) Area with recurrent snails (hm2) Areas with mollusciciding (hm2) Areas with environmental modification (hm2)
2005 13 181.83 112.70 1.26 a 261.58 9.06
2006 11 190.36 116.12 0.00 a 306.71 26.36
2007 11 059.95 126.90 4.66 a 239.83 23.34
2008 11 243.00 95.90 0.00 a 184.40 24.02
2009 10 735.92 100.26 0.00 a 110.07 15.12
2010 11 059.37 71.06 0.60 a 117.55 5.16
2011 10 046.77 58.52 0.82 51.74 118.06 4.64
2012 9161.18 79.15 0.61 61.52 320.61 2.77
2013 9326.08 62.52 0.43 35.64 123.77 16.33
2014 9441.76 48.46 1.18 28.90 123.29 3.43
2015 9833.01 47.52 0.43 32.60 103.23 3.88
2016 10 558.53 52.81 1.99 37.15 102.79 5.34
Total 126 837.75 11.98 247.55 2111.89 139.45
  1. ameans not available. – means not applicable