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巴西东北部夸雷姆博拉社区犬中的动物源性传染病病原体。

Vector-borne pathogens of zoonotic concern in dogs from a Quilombola community in northeastern Brazil.

机构信息

Graduate Program in Animal Biosciences, Federal Rural University of Pernambuco, Recife, Brazil.

Laboratory of Parasitology, Federal University of the Agreste of Pernambuco, Garanhuns, Brazil.

出版信息

Parasitol Res. 2022 Nov;121(11):3305-3311. doi: 10.1007/s00436-022-07661-x. Epub 2022 Sep 14.

Abstract

Canine vector-borne pathogens (CVBPs) comprise a group of disease agents mainly transmitted by ticks, fleas, mosquitoes and sand flies. In this study, we assessed the presence of CVBPs in an Afro-descendent community (Quilombola) of northeastern, Brazil. Dog blood samples (n = 201) were collected and analyzed by rapid test for the detection of antibodies against Leishmania spp., Anaplasma spp., Ehrlichia spp. and Borrelia burgdorferi sensu lato (s.l.), and antigens of Dirofilaria immitis. In addition, polymerase chain reactions were performed for Anaplasmataceae, Babesia spp., Hepatozoon spp., Rickettsia spp. and B. burgdorferi s.l. Overall, 66.7% of the dogs scored positive to at least one pathogen at serological and/or molecular methods. Antibodies against Ehrlichia spp. were the most frequently detected (57.2%; n = 115/201), followed by Anaplasma spp. (8.5%; n = 17/201), Leishmania spp. (8.5%; n = 17/201) and B. burgdorferi s.l. (0.5%; n = 1/201). For D. immitis, 11 out of 201 (5.5%) animals scored positive. At the molecular analysis, 10.4% (n = 21/201) of the samples scored positive for Babesia spp./Hepatozoon spp., followed by Anaplasmataceae (5.0%; n = 10/201) and Rickettsia spp. (3.0%; n = 6/201). All samples were negative for B. burgdorferi s.l. Our data demonstrated the presence of CVBPs in the studied population, with a high seropositivity for Ehrlichia spp. In addition, considering the detection of zoonotic pathogens in dogs and their relationship with people from Quilombola communities, effective control strategies are advocated for minimizing the risk of infection in this socially vulnerable human population and their pets.

摘要

犬媒介传染病病原体(CVBPs)主要由蜱、跳蚤、蚊子和沙蝇传播的一组疾病因子组成。在这项研究中,我们评估了巴西东北部一个非裔社区(Quilombola)中 CVBPs 的存在情况。采集了 201 只狗的血液样本,并通过快速检测来检测针对利什曼原虫、无形体属、埃立克体属和伯氏疏螺旋体(s.l.)的抗体,以及犬恶丝虫抗原。此外,还进行了聚合酶链反应以检测无形体科、巴贝斯虫属、血巴尔通体属、立克次体属和伯氏疏螺旋体 s.l.。总体而言,66.7%的狗在血清学和/或分子方法上至少对一种病原体呈阳性。最常检测到的是埃立克体属抗体(57.2%;n=201/115),其次是无形体属(8.5%;n=17/17)、利什曼原虫属(8.5%;n=17/17)和伯氏疏螺旋体 s.l.(0.5%;n=1/201)。对于犬恶丝虫,201 只动物中有 11 只(5.5%)呈阳性。在分子分析中,201 个样本中有 10.4%(n=21/201)对巴贝斯虫属/血巴尔通体属呈阳性,其次是无形体科(5.0%;n=10/201)和立克次体属(3.0%;n=6/201)。所有样本均为伯氏疏螺旋体 s.l. 阴性。我们的数据表明,在所研究的人群中存在 CVBPs,埃立克体属的血清阳性率很高。此外,考虑到在犬中检测到的人畜共患病病原体及其与 Quilombola 社区居民的关系,应倡导采取有效的控制策略,以最大限度地降低该社会弱势群体及其宠物感染的风险。

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