de Moura Catarina Elizia Bernardino Rates, de Sá Jayme Valéria, de Oliveira Monteiro Caio Marcio, Lopes Welber Daniel Zanetti, Soares Vando Edésio, Rossi Gabriel Augusto Marques, Gambarini Maria Lúcia, de Castro Ana Maria, de Souza Jéssica Yonara, de Oliveira Vanessa Silvestre Ferreira, de Amaral Leal Antônio, Arnhold Emmanuel, Teixeira Weslen Fabricio Pires
School of Veterinary and Zootechnics, Federal University of Goiás, Goiânia, Goiás, Brazil.
School of Veterinary and Zootechnics, Federal University of Goiás, Goiânia, Goiás, Brazil; Institute of Tropical Pathology and Public Health, Federal University of Goiás, Goiânia, Goiás, Brazil.
Vet Parasitol Reg Stud Reports. 2021 Dec;26:100625. doi: 10.1016/j.vprsr.2021.100625. Epub 2021 Aug 27.
The present study aimed to evaluate the spatial distribution and risk factors for infection by Toxoplasma gondii in sheep in the state of Goiás, located in the central-western region of Brazil. Through the immunofluorescence antibody test (IFAT), the seroprevalence of anti-T. gondii antibodies was analyzed in 1000 blood serum samples obtained from sheep in all macro and micro regions of the state of Goiás. Data related to sex, age of the animals, size of the farm, type of farm, water source, veterinary assistance, replacement of the herd, presence of domestic cats, presence of wild cats and presence of other wild animals were obtained at the sampling time. The differences between the seroprevalences obtained in relation to the variables analyzed were estimated using Pearson's chi-square test (χ2). The odds ratio (OR) values for each risk factor evaluated were statistically analyzed with a confidence interval of 95%. Positivity for IgG anti-T. gondii was observed (titer ≥64) in 34.3% (343/1000) of the samples, which ranged from 26.9% (31/115) to 44.2% (53/120) and from 21.8 (12/55) to 55.2% (16 / 29), respectively in the analyzed mesoregions and microregions. In all investigated regions of the State of Goiás, serum-reactive animals were detected with the age of the animals, the source of water, the form of replacement of the herd and the presence of domestic cats and wild animals risk factors statistically associated with the occurrence of T. gondii in animals.
本研究旨在评估位于巴西中西部地区戈亚斯州绵羊感染刚地弓形虫的空间分布及危险因素。通过免疫荧光抗体试验（IFAT），对从戈亚斯州所有宏观和微观区域的绵羊采集的1000份血清样本进行抗刚地弓形虫抗体血清阳性率分析。在采样时获取了与动物性别、年龄、农场规模、农场类型、水源、兽医援助、畜群更新、家猫存在情况、野猫存在情况以及其他野生动物存在情况相关的数据。使用Pearson卡方检验（χ2）估计所获得的血清阳性率与分析变量之间的差异。对每个评估的危险因素的比值比（OR）值进行统计分析，置信区间为95%。在34.3%（343/1000）的样本中观察到抗刚地弓形虫IgG阳性（滴度≥64），在分析的中观区域和微观区域中，该比例分别从26.9%（31/115）到44.2%（53/120）以及从21.8%（12/55）到55.2%（16/29）不等。在戈亚斯州所有调查区域中，均检测到血清反应阳性动物，动物年龄、水源、畜群更新形式以及家猫和野生动物的存在等危险因素与动物体内刚地弓形虫的发生在统计学上相关。
