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Epidemiological Insights into Feline Leukemia Virus Infections in an Urban Cat () Population from Brazil. | LitMetric

Epidemiological Insights into Feline Leukemia Virus Infections in an Urban Cat () Population from Brazil.

Animals (Basel)

Veterinary Medicine Diagnostic Laboratory (LDMV), Institute of Biotechnology (IB), Postgraduate Programs in Animal Health (PPGSA) and Biotechnology (PPGBIO), University of Caxias do Sul (UCS), Caxias do Sul 95070-560, RS, Brazil.

Published: March 2024

AI Article Synopsis

Article Abstract

Feline leukemia virus (FeLV) is a retrovirus distributed worldwide in domestic cats and with different outcomes (progressive, regressive, abortive, focal). The present study reports an epidemiological survey of FeLV frequency and the evaluation of some risk factors and the two main disease outcomes (progressive and regressive) in an urban cat population from Brazil. A total of 366 cats with sociodemographic information and p27 FeLV antigen test performed were included in the study. FeLV DNA (provirus) in the blood samples of all cats was detected via real-time polymerase chain reaction (qPCR). Plasma samples from 109 FeLV-positive and FeLV-negative cats were also submitted to reverse transcription (RT-qPCR) to determine the FeLV viral load. The results demonstrated that 112 (30.6%) cats were positive through the p27 antigen and/or qPCR. A risk factor analysis demonstrated that cats without vaccination against FeLV (OR 9.9, < 0.001), clinically ill (OR 2.9, < 0.001), with outdoors access (OR 2.7, < 0.001), and exhibiting apathetic behavior (OR 3.1, < 0.001) were more likely to be infected with FeLV. FeLV-infected cats were also more likely to present with anemia (OR 13, < 0.001) and lymphoma (OR 13.7, = 0.001). A comparative analysis of the different detection methods in a subset of 109 animals confirmed FeLV infection in 58 cats, including 38 (65.5%) with progressive, 16 (27.6%) with regressive, and 4 (6.9%) with probably focal outcome diseases. In conclusion, this study demonstrates a high prevalence of FeLV in this urban cat population from Brazil and highlights the need to establish more effective prevention strategies (such as viral testing, vaccination programs, specific care for FeLV-positive cats) to reduce diseases associated with this virus in Brazil.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11010845PMC
http://dx.doi.org/10.3390/ani14071051DOI Listing

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