Spatial distribution and risk factors for sheep toxoplasmosis in Goiás, Brazilian Cerrado Region
2021
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
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.
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