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Vet Ital. 2014 Jan-Mar;50(1):49-56. doi: 10.12834/VetIt.82.258.2.

Natural infection of Anaplasma platys in dogs from Umbria region (Central Italy).

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  • 1Department of Veterinary Medicine, Section of Internal Medicine, Faculty of Veterinary Medicine, University of Perugia, Via San Costanzo 4, 06126 Perugia, taly.


Anaplasma platys is a tick-borne pathogen causing the Infectious Canine Cyclic Thrombocytopenia. The pathogenesis of this disease is not yet well understood, due to the wide variety of clinico-pathological patterns described worldwide and to the high prevalence of co-infections with other vector-borne pathogens occurring in endemic areas. The present paper reports 3 cases of infection by A. platys occurring in dogs native to Central Italy, considered a non-endemic area to date. Infections were initially diagnosed based on clinical data and observation of morulae within platelets and then confirmed by biomolecular techniques. Moreover, two dogs showed an immune-mediated hemolytic anemia, as yet not described in literature in association with A. platys infection. The symptoms and the pathological findings observed will be discussed, as well as the importance to include this pathogen in the differential diagnosis of tick-borne diseases even in Central Italy.

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