2018
DOI: 10.1590/s1984-296120180025 View full text |Buy / Rent full text
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Abstract: The aim of this study was to evaluate the presence of anti-Toxocara antibodies in naturally infected broiler chickens (n = 189) from the state of Paraná, southern Brazil. The chickens were reared in a semi-intensive system by small family farmers (n = 7). An enzyme-linked immunosorbent assay (ELISA) was performed to detect the presence of anti- Toxocara spp. IgY after serum adsorption with Ascaridia galli antigens. An overall seroprevalence of 67.7% (128/189; 95% CI = 61.1-74.4) was observed. The frequency of … Show more

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“…This finding was supported by a 2011 Brazilian study, with 52.9% of female sheep between 11 and 15 months reported to have anti-Toxocara antibodies, compared with 5% sero-prevalence in lambs aged 0-6 months (Santarém et al, 2011). Serological investigations have also been undertaken for chickens, with 58.5% (Campos-da-Silva et al, 2015) and 67.7% (Oliveira et al, 2018) of birds in Brazil confirmed to have anti-Toxocara antibodies. Whilst circulating antibodies do not prove the presence of infective larvae in the tissues, they confirm exposure of animals to Toxocara spp.…”
Section: Natural Infections In Food-producing Animalsmentioning
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“…This finding was supported by a 2011 Brazilian study, with 52.9% of female sheep between 11 and 15 months reported to have anti-Toxocara antibodies, compared with 5% sero-prevalence in lambs aged 0-6 months (Santarém et al, 2011). Serological investigations have also been undertaken for chickens, with 58.5% (Campos-da-Silva et al, 2015) and 67.7% (Oliveira et al, 2018) of birds in Brazil confirmed to have anti-Toxocara antibodies. Whilst circulating antibodies do not prove the presence of infective larvae in the tissues, they confirm exposure of animals to Toxocara spp.…”
Section: Natural Infections In Food-producing Animalsmentioning
“…History of intaking raw meat of paratenic hosts such as sheep (34), rabbits (35), cattle (36), domestic pigs (37), chickens (38,39), and ostriches (40), have also been considered a risk factor for toxocarosis (33,41,42). Humans are considered accidental hosts of Toxocara spp.…”
Section: Introductionmentioning
“…and are most commonly infected by ingesting embryonated eggs from soil or larvae from paratenic host tissues (9,21,43). In this species, the larvae may migrate to the small intestine and other organs, but the parasite is unable to complete its cycle (37,38,44,45).…”
Section: Introductionmentioning
“…[80][81][82][83][84][85][86][87][88][89][90] Serological surveys carried out on synanthropic animals that are paratenic hosts of T. canis revealed significant natural frequencies of infection, indicating that there is a risk involved in the human consumption of raw or undercooked meat from these animals. [91][92][93][94] Recombinant proteins used in ELISAs and Western blot assays for the diagnosis of Toxocara infections of cattle, horses, and sheep have obtained good results. 95…”
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