dynamics of fasciola hepatica infection in two species of snails in a rural locality of mexico.the aim of the present study was to identify the species that are natural intermediate hosts of fasciola hepatica in a research centre in chapa de mota, state of mexico, mexico, where temperate and humid conditions prevail. also, the magnitude and dynamics of the natural infection in four biotopes were analysed. the study was performed between october 2000 and november 2001. the molluscs were collected, identified and studied for trematode infection. soil humidity and temperature were determined ...200415110406
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