Figure 4From: Modelling climate change impact on the spatial distribution of fresh water snails hosting trematodes in ZimbabwePredicted snail habitat suitability in 1990 for three snail species. Bulinus globosus (a), Biomphalaria pfeifferi (b) and Lymnaea natalensis (c) with an overlay of prevalence survey schools (human schistosomiasis - map a and b) and dip tanks (veterinary fascioliasis - map c). ◯ no transmission (prevalence <5%), ● on-going transmission (prevalence >5%).Back to article page