Table 2.
The pooled prevalences of S. mansoni and S. haematobium infection among Biomphalaria and Bulinus snails of Africa.
| Snail genus | Snail species | Studies (n) | Examined snails (n) | Infected snails | |
|---|---|---|---|---|---|
| n | pp (95%CI) | ||||
| Biomphalaria | B. pfeifferi | 19 | 46480 | 987 | 5.10 (4.05–6.15) |
| B. sudanica | 5 | 47027 | 1032 | 6.73 (4.46–9.01) | |
| B. alexandrina | 4 | 3569 | 62 | 2.81 (0.75–4.87) | |
| B. choanomphala | 2 | 16,100 | 225 | 1.58 (0.44–2.21) | |
| B. stanleyi | 1 | 21,715 | 949 | 4.37 (4.09–4.64) | |
| Unclassified Biomphalaria snails | 3 | 20414 | 479 | 21.28 (-1.78–44.34) | |
|
| |||||
| Bulinus | B. globosus | 14 | 13691 | 2511 | 12.25 (6.23–18.27) |
| B. truncatus | 13 | 42538 | 2077 | 5.78 (4.36–7.20) | |
| B. nasutus | 2 | 28648 | 278 | 0.98 (0.76–1.20) | |
| B. senegalensis | 2 | 7344 | 10 | 4.73 (-10.72–20.18) | |
| B. umbilicatus | 1 | 339 | 22 | 6.49 (3.71–9.27) | |
| B. forskalii | 3 | 21461 | 37 | 0.13 (0.08–0.34) | |
| B. camerunensis | 1 | 7 | 4 | 57.14 (21.30–92.99) | |
| Unclassified Bulinus snails | 1 | 4312 | 9 | 2.1 (0.10–3.90) | |
|
| |||||
| Total | 51 | 273 643 | 8682 | 5.51 (4.95–6.07) | |