Seroprevalence and isolation of Toxoplasma gondii in sheep intended for human consumption in Paraíba, northeastern Brazil.

Autor: Silva SS; Postgraduate Program in Animal Science, Federal University of Campina Grande (UFCG), Patos, Paraíba, Brazil., Batista SP; Postgraduate Program in Animal Science, Federal University of Campina Grande (UFCG), Patos, Paraíba, Brazil., Sarmento WF; Department of Veterinary Medicine, Federal Institute of Paraíba (IFPB), Avenida Presidente Tancredo Neves, s/n, Jardim Sorrilândia, Sousa, Paraíba, ZC 58800-970, Brazil., da Silva RF; Department of Veterinary Medicine, Federal Institute of Paraíba (IFPB), Avenida Presidente Tancredo Neves, s/n, Jardim Sorrilândia, Sousa, Paraíba, ZC 58800-970, Brazil., Sousa LN; Postgraduate Program in Animal Science, Federal University of Campina Grande (UFCG), Patos, Paraíba, Brazil., Bezerra RA; Postgraduate Program in Animal Science, Federal University of Campina Grande (UFCG), Patos, Paraíba, Brazil., Oliveira CSM; Department of Veterinary Medicine, Federal Institute of Paraíba (IFPB), Avenida Presidente Tancredo Neves, s/n, Jardim Sorrilândia, Sousa, Paraíba, ZC 58800-970, Brazil., Brasil AWL; Department of Morphology, Federal University of Paraíba (UFPB), João Pessoa, Paraíba, Brazil., Feitosa TF; Department of Veterinary Medicine, Federal Institute of Paraíba (IFPB), Avenida Presidente Tancredo Neves, s/n, Jardim Sorrilândia, Sousa, Paraíba, ZC 58800-970, Brazil., Vilela VLR; Postgraduate Program in Animal Science, Federal University of Campina Grande (UFCG), Patos, Paraíba, Brazil. vinicius.vilela@ifpb.edu.br.; Department of Veterinary Medicine, Federal Institute of Paraíba (IFPB), Avenida Presidente Tancredo Neves, s/n, Jardim Sorrilândia, Sousa, Paraíba, ZC 58800-970, Brazil. vinicius.vilela@ifpb.edu.br.
Jazyk: angličtina
Zdroj: Parasitology research [Parasitol Res] 2021 Nov; Vol. 120 (11), pp. 3925-3931. Date of Electronic Publication: 2021 Oct 06.
DOI: 10.1007/s00436-021-07336-z
Abstrakt: Toxoplasma gondii is a zoonotic parasite capable of infecting almost all warm-blooded animals. Currently, studies assessing the viability of cysts present in sheep meat are still scarce, especially in the northeastern region of Brazil. Therefore, the aim of this study was to evaluate the seroprevalence of anti-Toxoplasma gondii antibodies, isolate the parasite from tissue samples, and determine factors associated with infection of sheep intended for human consumption in the state of Paraíba, northeastern Brazil. Serum samples from 205 sheep slaughtered in Paraíba were tested using the indirect fluorescence antibody test (IFAT ≥ 64) for the presence of anti-T. gondii antibodies. Among the animals sampled, 30.7% (63/205) were seropositive, with antibody titers ranging from 1:64 to 1:16384. Sixty-one bioassays were performed in mice, and an isolation rate of 47.5% (29/61) was obtained. The infection was lethal to at least one infected mouse in 24.1% (7/29) of the bioassays. The mean length of survival of infected mice was 36.4 days. Females (OR = 3.183; CI = [1.452-6.976]), extensive breeding system (OR = 2.612; CI = [1.120-6.094]), and purebred animals (OR = 2.157; CI = [1.009-4.612]) were considered to be factors associated with infection. These results revealed that the prevalence of anti-T. gondii antibodies and the percentage of viable cysts recovered from sheep destined for human consumption in Paraíba, northeastern Brazil, were high.
(© 2021. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)
Databáze: MEDLINE
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