Figure 2. Human fascioliasis transmission and epidemiology in Atlixco municipality, Puebla, Mexico.

A) permanent water collection inhabited by freshwater lymnaeid snails, just in front of school (note red school roof in the background); B) permanent water collection inhabited by freshwater lymnaeid snails showing nearby snow-capped Popocatepetl volcano in the background; C) water channel inside school playground with water coming from outside pond illustrated in A; D) women washing in water channel inhabited by lymnaeid vectors, accompanied by small children.