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Infection of snails by Digenea larvae in collected samples. Parasites—Srigeida: AG Apatemon gracilis, BP Bilharziella polonica, DP Diplostomum pseudospathaceum, SI Sanguinicola inermis, TC Tylodelphys clavata, TO Trichobilharzia ocellata; Echinostomida: EA Echinoparyphium aconiatum, ER Echinostoma revolutum, ES Echinostoma spiniferum, HC Hypoderaeum conoideum, NE Notocotylus ephemera; Plagiorchiida: OR Opisthoglyphe ranae, PE Plagiorchis elegans; undiagnosed pre-patent invasion—PI
