Lacerda L C, Silva A N, Freitas J S, Cruz R D S, Said R A, Munhoz A D
Departamento de Ciências Agrárias e Ambientais, Universidade Estadual de Santa Cruz, Ilhéus, BA, Brasil.
Departamento de Ciências Agrárias e Ambientais, Universidade Estadual de Santa Cruz, Ilhéus, BA, Brasil
Genet Mol Res. 2017 May 10;16(2):gmr-16-02-gmr.16029633. doi: 10.4238/gmr16029633.
Our aims were to determine the frequencies of feline immunodeficiency virus (FIV) and feline leukemia virus (FeLV) in owned and stray cats in the northeastern region of Brazil, ascertain the status of FeLV infection, and investigate potential associated factors among the owned cats. Blood samples from 200 asymptomatic owned cats and 30 stray cats were processed using nested PCR and commercial immunochromatographic tests to diagnose infections. To evaluate the factors associated with FIV and/or FeLV in owned cats, a semi-structured interview was conducted with each owner about the animal's environment, and these data were subjected to unconditional logistic regression. The frequencies for owned cats were 6% (12/200) and 3% (6/200) for FIV and FeLV, respectively. No owned cat was positive for both viruses. Stray cats showed frequencies of 6.66% (2/30) and 0% (0/30) for FIV and FeLV, respectively. Contact with other cats and living in peri-urban areas were considered to be risk factors (P < 0.05) for FIV. We did not identify any factors associated with infections with FeLV. Our results confirm the presence of these two retroviruses in the region under study. Our use of different diagnostic techniques allowed us to determine the frequency of retroviruses in the feline population more accurately, particularly with regard to infections by FeLV, which have complex pathogenesis.
我们的目标是确定巴西东北部家养猫和流浪猫中猫免疫缺陷病毒（FIV）和猫白血病病毒（FeLV）的感染率，确定FeLV感染状况，并调查家养猫中潜在的相关因素。使用巢式PCR和商业免疫层析试验对200只无症状家养猫和30只流浪猫的血样进行处理，以诊断感染情况。为了评估与家养猫中FIV和/或FeLV相关的因素，对每位猫主人就动物的生活环境进行了半结构化访谈，并对这些数据进行无条件逻辑回归分析。家养猫中FIV和FeLV的感染率分别为6%（12/200）和3%（6/200）。没有一只家养猫同时感染这两种病毒。流浪猫中FIV和FeLV的感染率分别为6.66%（2/30）和0%（0/30）。与其他猫接触和生活在城郊地区被认为是FIV感染的危险因素（P<0.05）。我们未发现与FeLV感染相关的任何因素。我们的结果证实了这两种逆转录病毒在所研究地区的存在。我们使用不同的诊断技术能够更准确地确定猫群中逆转录病毒的感染率，特别是对于具有复杂发病机制的FeLV感染。
