![]() auricularia distributions, within Hungary and across Central Europe.Īvian schistosomes (Digenea: Schistosomatidae) are parasitic flatworms of medical relevance present worldwide ( Chamot et al., 1998 Kourilova et al., 2004). Taken as a whole, we demonstrate the actual and potential risk zone for cercarial dermatitis, particularly with reference to R. Our findings help to pinpoint a contemporary life cycle of this avian schistosome within an urban environment, a location regularly visited by various wild waterfowl and the possible species of avian schistosomes responsible for cercarial dermatitis in Hungary. franki that were confirmed by molecular methods. Five snails (∼2%) consistently shed numerous furcocercariae of T. ![]() In total, 245 European ear snails ( Radix auricularia), a known intermediate host of Trichobilharzia spp., were collected from an urban pond in Eger, Hungary. Of note, these avian blood flukes were predominately encountered in wild mallards (∼50%) and not in birds reared for hunting (∼1%). Most importantly, Trichobilharzia franki was found for the first time in Hungary and in 5 dispersed counties in conjunction with of 3 counties where other avian schistosomes were found. Inspecting both morphological characters and molecular data, the cytochrome oxidase subunit I (COI) and large subunit ribosomal DNA (LSU rDNA) sequences, Bilharziella polonica and Dendritobilharzia pulverulenta were each identified. Birds were collected within 12 regions of Hungary, representative of 9 different counties. ![]() Between September 2018 and September 2020, carcasses of 94 mallards ( Anas platyrhynchos), two green-winged teals ( Anas crecca) along with one ferruginous duck ( Aythya nyroca) were examined. Upon water contact, these avian schistosome larvae directly penetrate human skin and cause irritation. Cercarial dermatitis in humans is a re-emerging zoonotic disease caused by infectious larvae of avian blood flukes within the Schistosomatidae family.
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