High occurrence of felid alphaherpesvirus 1 and feline calicivirus in domestic cats from southern Brazil

Alta ocorrência de alphaherpesvirus felideo e calicivirus felino em gatos domésticos no Sul do Brasil

Alice S. Becker Francielle Liz Monteiro Ana Carolina A. Scariot Domitila B. Chagas Geferson Fischer Marcelo de Lima Silvia O. Hübner About the authors


Felid alphaherpesvirus 1 (FeHV-1) and feline calicivirus (FCV) affect cats worldwide. The aim of this study was to evaluate the frequency of occurrence of FeHV-1 and FCV in cats with clinical signs of respiratory, oral and/or ocular disease. Samples were collected from cats cared for in veterinary ambulatory and clinics and submitted to molecular detection and viral isolation. Of the 49 cats evaluated, 45 (92%) were positive for at least one of the viruses; 82% (40/49) were positive for FeHV-1 and 41% (20/49) for FCV. Of these, 31% (15/49) were coinfection cases. For FeHV-1, 45% (18/40) of the cats tested were positive from the collection of eye swab, and the same percentage (9/20) was obtained for the FCV by the oral swab. FeHV-1 and/or FCV were isolated in 35% (17/49) of the samples. The main clinical sign observed was ocular secretion in 71% (35/49) of cats, characterized as mild serous, purulent or serosanguineous, and in some cases associated with ocular injury and marked chemosis. Our findings demonstrate the high occurrence of FeHV-1 and FCV in domestic cats in southern Brazil and indicate that measures should be implemented to improve the diagnostic, prevention and management against of these important diseases.

Felid alphaherpesvirus 1; feline calicivirus; domestic cats; Brazil; cat; feline respiratory disease complex; FRDC; FCV; FeHV-1

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