Laboratório de Patologia Veterinária (LPV), Departamento de Patologia, Centro de Ciências da Saúde (CCS), Universidade Federal de Santa Maria (UFSM), Av. Roraima, 1000, Building 97B, Bairro Camobi, Santa Maria, RS, 97105-900, Brazil.
Laboratório de Doenças Parasitárias (LADOPAR), Departamento de Medicina Veterinária Preventiva (DMVP), Centro de Ciências Rurais (CCR), Universidade Federal de Santa Maria (UFSM), Av. Roraima, 1000, Building 63C, Bairro Camobi, Santa Maria, RS, 97105-900, Brazil.
Parasitol Res. 2023 Nov;122(11):2631-2639. doi: 10.1007/s00436-023-07961-w. Epub 2023 Sep 5.
Feline leishmanial infection is reported worldwide, but the epidemiological role of domestic cats in the leishmaniasis cycle remains unclear, and cats might act as cryptic reservoir hosts in endemic areas with no feline leishmaniosis cases. Considering that, a serological screening for anti-Leishmania spp. antibodies was performed by indirect immunofluorescence antibody test (IFAT) in 389 necropsied cats' serum samples from a new visceral leishmaniasis transmission area with no feline leishmanial infection reported to unveil if the cats are being exposed to the parasite. The overall seroprevalence for Leishmania spp. was 11.05% (43/389). No association was found between sex, neutering status, age group, breed, coat length, feline immunodeficiency virus (FIV) infection, and Leishmania spp. antibody detection. A positive association was found with coat color (cats within the orange spectrum with white [particolor]) (OR = 2.47, CI 95% 1 - 6.13, P = 0.044) and a negative association (OR = 0.38, CI 95% 0.18 - 0.79, P = 0.01) between feline leukemia virus (FeLV) infection and IFAT positivity for Leishmania spp. Therefore, it is concluded that the seroprevalence found was greater than 10%, indicating contact of the protozoan with cats in the region served.
猫利什曼原虫感染在世界范围内都有报道,但家猫在利什曼病循环中的流行病学作用仍不清楚,而且在没有猫利什曼病病例的流行地区,猫可能是隐性的储存宿主。考虑到这一点,在一个新的内脏利什曼病传播地区,对 389 份尸检猫血清样本进行了间接免疫荧光抗体试验(IFAT),以筛查抗利什曼原虫 spp. 抗体,以揭示猫是否接触过寄生虫。利什曼原虫 spp. 的总血清阳性率为 11.05%(43/389)。性别、绝育状况、年龄组、品种、被毛长度、猫免疫缺陷病毒(FIV)感染与利什曼原虫 spp. 抗体检测之间均无相关性。与毛色(橙色带白色的猫[杂色])呈正相关(OR=2.47,95%CI 1-6.13,P=0.044),与猫白血病病毒(FeLV)感染呈负相关(OR=0.38,95%CI 0.18-0.79,P=0.01)。因此,得出的结论是,发现的血清阳性率大于 10%,表明该地区的猫与原生动物有接触。
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