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Table 1 Mortality and success of infection rates of snails during prepatent and patent periods

From: Biomphalaria camerunensis as a viable alternative intermediate host for Schistosoma mansoni in southern Cameroon

Snail species Snail population Prepatent period Patent period
No. of snails exposed No. of surviving snails Mortality rate (%) No. of infected snails Infection rate (%) Duration of pp No. of surviving snails No. of infected snails surviving Mortality rate (%)
B. pfeifferi Nkolbisson 164 157 4.3 125 79.6 21–25 115 110 29.9
Gounougou 92 90 2.2 40 44.4 25–32 66 22 28.3
Mokolo 88 80 2.3 36 41.9 25–40 50 6 43.2
Total 344 327 4. 9 201 61.5   231 138 32.8
B. camerunensis Yana Messina 91 90 1.1 4 4.4 34–36 63 4 30.8
Mounassi 96 93 3.1 5 5.3 34–40 78 4 18.8
Kede 92 87 5.4 5 5.7 34–40 75 4 18.8
Sangmelima 99 97 2.0 0 0.0 0 81 0 18.2
Petponoun 105 105 0.0 23 21.9 28–32 21 8 80.0
Total 483 472 2.3 37 7.8   318 20 34.2
  1. Abbreviations: SIR, success of infection rate, pp prepatent period