https://phaidra.vetmeduni.ac.at/o:3887 First autochthonous case of Opisthorchis felineus in Austria Kulmer, Lisa-Maria Lisa-Maria Kulmer 0000-0003-2568-9249 University of Veterinary Medicine Vienna Unterköfler, Maria Sophia Maria Sophia Unterköfler 0000-0003-2947-1423 University of Veterinary Medicine Vienna Vali, Yasamin Yasamin Vali 0000-0002-6090-0663 University of Veterinary Medicine Vienna Schwendenwein, Ilse Ilse Schwendenwein University of Veterinary Medicine Vienna Luckschander-Zeller, Nicole Nicole Luckschander-Zeller University of Veterinary Medicine Vienna BMC journal article open access eng Opisthorchis felineus is a feline pathogen with zoonotic potential that can be a causative agent of human opisthorchiasis and cholangiocarcinoma. In Europe, O. felineus is particularly endemic in Eastern European countries, while this parasite has also been sporadically detected in Germany, Italy and northern Poland. Parts of Asia, such as Russia, Ukraine and Kazakhstan, are also affected.A 7-year-old female neutered European Shorthair cat, without any traveling history, presented in May 2023 with weight loss, anorexia and vomiting.The cat showed increased liver enzyme activities, hyperbilirubinemia and hyperammonemia consistent with the suspected diagnosis of cholangitis with consecutive hepatoencephalopathy. Eggs of O. felineus were detected by routine cytological examination of bile smears and PCR confirmed O. felineus.This is the first report of autochthonous O. felineus infection in Austria. Animals Opisthorchis Isolation & Purification Opisthorchis Genetics Cats Cat Diseases Parasitology Cat Diseases Diagnosis Female Opisthorchiasis Diagnosis Opisthorchiasis Parasitology Opisthorchiasis Veterinary Opisthorchiasis Epidemiology Austria Epidemiology Bile Parasitology Polymerase Chain Reaction http://creativecommons.org/licenses/by/4.0/ https://phaidra.vetmeduni.ac.at/api/object/o:3887/download 10.1186/s13071-025-06659-5 https://phaidra.vetmeduni.ac.at/o:605 application/pdf Parasites & Vectors issn:1756-3305 VoR Parasites & Vectors 18 1 2.16 MB 2025