This study aims to determine the prevalence of antibodies immunoglobulin class G (IgG) specific of this disease in bovine created, by contributing to the understanding of the epidemiology of this zoonosis in the state of Pará. The study was conducted in all Para meso, they were harvested blood samples from animals in 2070, with 1750 and 320 bovine and buffalo, respectively, coming from 52 municipalities and 100 properties, a survey of the epidemiological aspects influencing the onset of the infectious agent. Sera of animals underwent the test of ELISA Kit – Enzyme-Linked Immunosorbent Assay and indirect immunofluorescence - IFA for the detection of specific IgG antibodies to T. gondii cattle and buffalo the Imunodot® company. The animals were considered positive in the IFAT test from the dilution 1:64. It was considered statistically significant difference p 0.005. The buffaloes had higher seropositivity that the bovine, as well as the IFA test was higher than the ELISA test, and Mesoregion more seropositive was the Lower Amazon. There were no significant differences in the frequency of T. gondii, in relation to sex, type of exploitation, but no significant association for age, size of property, number of animals in the property, creation cycle, and the properties that presented greater amount of cats and dogs were the ones that had higher sororreagência the anti - T. gondii.
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