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Table 2 Total number of Biomphalaria snail species collected and number of those shedding cercariae by survey

From: Longitudinal survey on the distribution of Biomphalaria sudanica and B. choanomophala in Mwanza region, on the shores of Lake Victoria, Tanzania: implications for schistosomiasis transmission and control

Survey (Month-Year) Biomphalaria B. sudanica B. choanomphala
Collected Shedding (%) Collected Shedding (%) Collected Shedding (%)
Jan-12 1060 36 (3.37) 1026 36 (3.51) 34 0 (0)
Mar-12 2136 26 (1.22) 1578 22 (1.39) 500 4 (0.80)
Jul-12 4889 111 (2.27) 3505 98 (2.80) 1384 4 (0.29)
Nov-12 2905 40 (1.38) 2363 36 (1.52) 542 4 (0.74)
Mar-13 2571 57 (2.22) 2336 49 (2.10) 235 8 (3.40)
Jul-13 3721 21 (0.56) 2248 11 (0.50) 1473 10 (0.68)
Oct-13 3166 38 (1.20) 3128 38 (1.21) 38 0 (0)
Feb-14 2537 29 (1.14) 2397 20 (0.83) 140 9 (6.43)
May-14 2756 46 (1.67) 1784 36 (2.02) 972 10 (1.03)
Sep-14 3536 14 (0.40) 3232 14 (0.43) 304 0 (0)
Dec-14 2285 19 (0.83) 2102 17 (0.81) 183 2 (1.09)
Feb-15 2893 20 (0.70) 2349 18 (0.77) 544 2 (0.37)
May-15 1613 36 (2.23) 1325 29 (2.19) 288 7 (2.43)
Aug-15 3673 8 (0.22) 3505 7 (0.20) 168 1 (0.59)
Nov-15 3133 8 (0.25) 3032 8 (0.26) 101 0 (0)
Total 42,874 509 (1.19) 35,910 439 (1.21) 6906 61 (0.88)
  1. Numbers will not match total Biomphalaria due to 58 snails with missing species data
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