Herd-level based seroprevalence and associated factors for Toxoplasma gondii in cows in the state of Paraíba, Northeastern Brazil

Maia, Amanda Rafaela Alves; Bezerra, Roberto Alves; Silva, Samara Santos; Alvares, Felipe Boniedj Ventura; Santos, Carolina de Sousa Américo Batista; Alves, Clebert José; Clementino, Inácio José; Feitosa, Thaís Ferreira; Vilela, Vinícius Longo Ribeiro; Azevêdo, Sérgio Santos de

doi:10.1590/s1984-29612023025

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“…In Southeast Brazil, specifically in the State of São Paulo, the prevalence was reported as 18% [ 25 ]. In Northeast Brazil, in the State of Paraíba, the prevalence was also 18% [ 26 ]. On the other hand, states closer to Rondônia showed higher prevalence percentages.…”

Section: Discussionmentioning

confidence: 99%

Seropositivity of Anti-Toxoplasma gondii and Anti-Neospora caninum Antibodies in Cattle Intended for Human Consumption in an Amazonian Area of North Brazil

et al. 2023

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Toxoplasma gondii and Neospora caninum are obligate intracellular intestinal coccidia distributed worldwide, and are causative agents of toxoplasmosis and neosporosis, respectively. The aim of this study was to evaluate the prevalence of anti-T. gondii and anti-N. caninum antibodies and the factors associated with infections in beef cattle intended for human consumption in an Amazonian area of North Brazil. We collected blood samples of 387 cattle from 50 herds located in different municipalities of the State of Rondônia. An epidemiological questionnaire was distributed to farmers, with regard to nutritional, sanitary and reproductive herd management. The samples were identified, refrigerated and sent for serological analyses via IFAT (Immunofluorescent Antibody Test). Among the 387 analyzed animals, 91 (23.5%; CI 95%: 18.8–27.2) were positive for anti-T. gondii antibodies, with titers varying from 1:64 (75.8%) to 1:512 (2.2%). For anti-N. caninum antibodies, only four animals (1%; CI 95%: 0–2.7) were positive, with titers ranging from 1:400 (50%) to 1:1600 (25%). We observed a significant rate of anti-T. gondii antibodies in the variables “pure breed” and “contact with free-range chickens” (p < 0.2). There were no risk factors associated with the presence of anti-T. gondii or anti-N. caninum antibodies. In conclusion, there was a high prevalence of anti-T. gondii antibodies in beef cattle intended for human consumption in the State of Rondônia, Brazil, and a low prevalence of anti-N. caninum antibodies. Longitudinal studies can better elucidate the cause of these prevalence levels and how they could be better prevented and controlled.

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Section: Discussionmentioning

confidence: 99%