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Angiostrongylosis caused by metastrongyloid nematode Angiostrongylus vasorum is an emerging parasitic disease in Europe and the red fox (Vulpes vulpes) is considered as a main reservoir species for this parasite. Little is known about the role of other wild canids in the epidemiology of angiostrongylosis. The present paper provides the first description of pathomorphological lesions caused by A. vasorum in a golden jackal (Canis aureus). The paper describes a case of co-infection with A. vasorum and Dirofilaria immitis in a one-year-old female golden jackal, legally hunted near the City of Kovin, South Banat, Serbia. The postmortem examination revealed severe pneumonia, proliferative endarteritis, the presence of two adult males of D. immitis in the right atrium, and the presence of 15 adult forms of A. vasorum (11 females and 4 males) in the pulmonary arteries. Native microscopy of an impression smear of the lung tissue found numerous larvae compatible with the A. vasorum first larval stage. This paper provides the first evidence that angiostrongylosis exists in the golden jackal in Serbia and confirms that the golden jackal should be considered as a very suitable definitive host for A. vasorum. The results suggest the possibility that the golden jackal may act as reservoir species and as an important transmitter of A. vasorum larvae.

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This paper describes a case of aelurostrongylosis in a four-month old female domestic cat (Felis catus) from South Banat, Serbia. The kitten that had died suddenly without signs of illness was autopsied in the Veterinary Specialised Institute "Pančevo". The macroscopic finding was typical of granulomatous pneumonia and subsequently, histopathology revealed verminous pneumonia. Based on the parasite morphology, it was confirmed that the lung lesions were caused by Aelurostrongylus abstrusus. The present finding contributes to the knowledge of the prevalence of this underestimated parasite in the Balkan Peninsula.

Among the wild canids, the red fox (Vulpes vulpes) is recognised as an important reservoir species for a range of parasites, including cardiopulmonary nematodes of public health and veterinary importance. As cross-host transmission between the red fox and domestic carnivores can play an important role in the epizootiology of cardiopulmonary parasitic diseases, the aim of the present investigations was to obtain data on the geographical distribution of cardiopulmonary nematodes of the red fox. The material for examination consisted of 83 foxes which were legally hunted at different locations during a three-month period from December 2017 to February 2018. The presence of four emerging species in Europe (Angiostrongylus vasorum, Crenosoma vulpis, Dirofilaria immitis and Eucoleus aerophilus) was revealed in red foxes of Serbia. Crenosoma vulpis and E. aerophilus were detected in foxes in both the plain and the mountainous areas across the country. Dirofilaria immitis is distributed in red foxes near alluvial rivers in Vojvodina province (northern Serbia). Angiostrongylosis caused by A. vasorum was demonstrated to exist in two enzootic foci with a high percentage of infected foxes in a plain area of northern Serbia. To the best of our knowledge, C. vulpis and A. vasorum were discovered for the first time in red foxes in central Serbia. The results provide strong evidence for veterinarians to take into consideration the parasitic nematodes discovered in red foxes in the differential diagnosis of diseases of companion animals. In the context of the ‘One Health’ approach the results related to the distribution of the zoonotic species E. aerophilus and D. immitis can be useful for medical epidemiology.