o:36146 The first clinical case of Babesia vogeli infection in a dog from Serbia Prvi slučaj kliničke manifestacije Babesia vogeli infekcije kod psa iz Srbije en ABSTRACT The city of Belgrade, Serbia, with its continental climate and suburban green spaces, is an endemic region for canine babesiosis. Molecular analyses showed that the clinical manifestation of the disease is dominantly caused by Babesia canis, transmitted by a winter tick Dermacentor reticulatus. Thus, the occurrence of canine babesiosis is typically seen in winter and springtime. The presented case demonstrates for the first time an active infection with Babesia vogeli during the summer, in an elderly dog from Belgrade, without a previous history of travel. The patient was presented at the Faculty of Veterinary Medicine, Belgrade, with respiratory problems and thrombocytopenia. The Romanowsky-stained blood smears revealed unusually large babesia merozoites and microfilaria presence, and the dog tested positive for Dirofilaria immitis antigens. The patient was treated against both infections, with positive outcomes. blood smear, large babesia, microfilaria, molecular identification, Rhipicephalus sanguineus, thrombocytopenia 1552099 10.2478/acve-2025-0010 1552101 0567-8315 2025-04-28T12:36:38.840Z 44 yes 46 Kristina Spariosu University of Belgrade, Faculty of Veterinary Medicine, Department of Pathophysiology, Belgrade, Serbia Milica Kovačević Filipović University of Belgrade, Faculty of Veterinary Medicine, Department of Pathophysiology, Belgrade, Serbia person Predrag Stepanović University of Belgrade, Faculty of Veterinary Medicine, Department of Equine, Small Animal, Poultry and Wild Animal Diseases, Belgrade, Serbia person Filip Janjić University of Belgrade, Institute for the Application of Nuclear Energy INEP, Serbia doktor medicinskih nauka-veterinarska medicina person 0000-0002-5121-1145 Dimitrije Glišić Institute of Veterinary Medicine of Serbia, Virology Department, Belgrade, Serbia person Dajana Davitkov University of Belgrade, Faculty of Veterinary Medicine, Department of Forensic Veterinary Medicine, Belgrade, Serbia person application/pdf 619660 https://phaidrabg.bg.ac.rs/o:36146 no yes 16 70 92000001 11A10 11A29 11A2903 Acta Veterinaria-Beograd 75 1 120 131 Fakultet veterinarske medicine 2025