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. 2008 Apr 16;2(4):e222. doi: 10.1371/journal.pntd.0000222

Table 2. The number of snails infected with Schistosoma mansoni (SM), Schistosoma rodhaini (SR), unidentified mammalian schistosomes (US), and total schistosomes (TS) at various sites in the Lake Victoria Basin of Kenya.

Site Snails Infected With Total Snails P SM P SM P* SR P SR P*
SM SR US TS
Kagwel 1 0 0 1 934 0.11 0.11 0.11 0 0
Lwanda 1 1 0 2 923 0.22 0.11 0.11 0.11 0.11
Sandharvest 12 0 5 17 2652 0.64 0.45 0.64 0 0
Nyabera 8 3 2 13 2066 0.65 0.39 0.47 0.15 0.18
Seka Kagwa 5 0 1 6 747 0.80 0.67 0.67 0 0
Homa Bay 4 0 9 13 1605 0.81 0.25 0.81 0 0
Powerhouse 3 0 2 5 544 0.92 0.55 0.92 0 0
Nawa 5 5 2 12 1166 1.03 0.43 0.52 0.43 0.52
Asao 44 1 19 63 5997 1.05 0.73 1.03 0.02 0.02
Asembo Bay 21 2 9 31 2723 1.14 0.77 1.04 0.07 0.10
Usare Beach 1 1 6 10 816 1.23 0.12 0.62 0.12 0.62
Tilapia Beach 5 0 11 16 1169 1.37 0.43 1.37 0 0
Kasabong 9 0 7 16 450 3.56 2.00 3.56 0 0
Car Wash 22 4 5 31 849 3.65 2.59 3.09 0.47 0.56
Total 141 17 78 236 22641 1.04 0.62 0.92 0.08 0.11

The total number of snails collected, prevalence of schistosome infection (P), and prevalence of confirmed S. mansoni (SM P) and S. rodhaini (SR P) infections are given for each site. Prevalence for each species was also adjusted as denoted by an asterisk to accommodate unidentified schistosomes by multiplying the prevalence of schistosomes by the percentage of identified schistosomes for each species.