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[Opisthorchis felineus] [Opisthorchis viverrini]

Like all trematodes, Opisthorchis spp. require a snail as an intermediate host.  Snails in the genera Bithynia and Cordiella may serve as a first intermediate host for Opisthorchis spp.

A

A: Bithynia sp., a common intermediate host of Opisthorchis spp.  Image courtesy of Michal Maňas.