Serological profile of Toxoplasma gondii and Neospora caninum infection in commercial sheep from São Paulo State, Brazil

Langoni, Hélio; Greca, H.; Guimarães, F. F.; Ullmann, Leila Sabrina; Gaio, Fernanda Conceição; Uehara, Robson S.; Rosa, Eric Pivari; Amorim, Rogério Martins; Silva, Rodrigo da

doi:10.1016/j.vetpar.2010.11.024

Cited by 43 publications

(20 citation statements)

References 28 publications

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“…Toxoplasma gondii prevalence found in this study is similar to that described by Ueno et al (2009), in Federal District (38.2%) and by Pinheiro et al (2009), in Pernambuco (32.9%); higher than that found by Soares et al (2009), in Rio Grande do Norte (20.7%) and Langoni et al (2011), in São Paulo (18.61%); and it lower than that found by Lopes et al (2010), in São Paulo (52%) -all Brazilian states. All studies aforementioned used the IFAT for serology investigation.…”

Section: Discussionsupporting

confidence: 89%

Prevalence and risk factors associated with anti-Toxoplasma gondii antibodies in sheep from Bahia state, Brazil

Guimarães

Bezerra

Rocha

et al. 2013

Rev. Bras. Parasitol. Vet.

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In this study, we aimed to determine the prevalence of Toxoplasma gondii antibodies and identify risk factors associated with this infection in sheep from the southern region of Bahia state. Between February and December 2010, 795 sheep from 31 farms located in nine municipalities were tested. We found seroprevalence of 30.2% (240/795), with titers of 64 (38.3%), 256 (34.2%), 1,024 (18.3%), and 4,096 (9.2%) by Indirect Fluorescent Antibody Test (IFAT). Seropositive sheep were detected in all farms sampled. Univariate statistical analysis detected association between T. gondii seropositivity and the variables age, use of fresh food mainly, water source, stocking rate, production system, presence and number of cats on the farm, and transit of cats (p < 0.05). In the logistic regression model, transit of cats (p = 0.001), production system (p = 0.007), and age (p = 0.027) were identified as risk factors associated with T. gondii infection.Keywords: Epidemiology, ovine, toxoplasmosis, zoonosis, risk factors. ResumoObjetivou-se com este estudo determinar a prevalência de anticorpos anti-Toxoplasma gondii e identificar os fatores de risco associados à infecção em ovinos no sudeste do Estado da Bahia. De fevereiro a dezembro de 2010, 795 ovinos de 31 propriedades localizadas em nove municípios foram analisados. A soroprevalência foi de 30,2% (240/795), com títulos de 64 (38,3%), 256 (34,2%), 1.024 (18,3%) e 4.096 (9,2%) pela Reação de Imunoflorescência Indireta (RIFI). Ovinos positivos foram detectados em todas as fazendas estudadas. Na análise estatística univariada detectou-se associação entre a soropositividade e idade, uso de alimentação fresca, fonte de água, sistema de produção, presença e número de gatos na fazenda e o transito de gatos (p < 0,05). No modelo de regressão logística, transito de gatos (p = 0,001), sistema de produção (p = 0,007) e idade (p = 0,027) foram identificados como fatores de risco associados à infecção por T. gondii.

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Section: Discussionsupporting

confidence: 89%

Prevalence and risk factors associated with anti-Toxoplasma gondii antibodies in sheep from Bahia state, Brazil

Guimarães

Bezerra

Rocha

et al. 2013

Rev. Bras. Parasitol. Vet.

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“…Although the results of the Brazilian study are similar to ours, the Botucatu region had a relatively low level (18.6%) of anti-T. gondii antibodies in their tested sheep (Langoni et al, 2011), highlighting the fact that these animals might have been less exposed to the parasite than were those in Bahia. The microregion under current study has an extensive population of wild and domestic cats.…”

Section: Discussionsupporting

confidence: 81%

Detection of Toxoplasma gondii DNA in naturally infected sheep’s milk

et al. 2015

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ABSTRACT. The objective of this study was to verify whether Toxoplasma gondii is excreted in the milk of naturally infected sheep. In order to accomplish this, 275 lactating ewes were used; these were bred extensively in 17 estates distributed across nine cities. Polymerase chain reaction amplification was used to detect T. gondii DNA in milk samples, and the indirect immunofluorescence test was employed for the detection of anti-T. gondii IgG antibodies in the sera, with a cut-off value of 1:64. It was possible to verify the presence of the parasite DNA in 6.5% (18/275) of the studied animals. Anti-T. gondii antibodies were present in 41.5% of the animals studied (114/275). There was no correlation between parasite excretion in milk and the presence of IgG in 38.9% of the studied animals (7/18). The high seropositivity and the presence of parasite DNA in the milk led to the conclusion that T. gondii infection is present in the sheep population in southern and southwestern Bahia, and that there is a risk of the human population becoming infected due to the consumption of raw, in natura milk.

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“…Considering that in the present study the number of cats in each farm was not accessed, it is possible that the results were herein influenced. The frequency of antibodies against N. caninum observed in the present study (13.74%) was next to the positivity rate obtained in serological surveys conducted in sheep from farms in Minas Gerais (13.1%) and São Paulo state (12.8%), southeastern Brazil (Langoni et al 2011, Andrade et al 2012. Serological studies in Brazil have presented a variety of results according to the region studied.…”

Section: Discussionsupporting

confidence: 69%

Occurrences of anti-Toxoplasma gondii and anti-Neospora caninum antibodies in sheep from four districts of Tocantins state, Brazilian Legal Amazon Region

et al. 2015

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Serological profile of Toxoplasma gondii and Neospora caninum infection in commercial sheep from São Paulo State, Brazil

Cited by 43 publications

References 28 publications

Prevalence and risk factors associated with anti-Toxoplasma gondii antibodies in sheep from Bahia state, Brazil

Prevalence and risk factors associated with anti-Toxoplasma gondii antibodies in sheep from Bahia state, Brazil

Detection of Toxoplasma gondii DNA in naturally infected sheep’s milk

Occurrences of anti-Toxoplasma gondii and anti-Neospora caninum antibodies in sheep from four districts of Tocantins state, Brazilian Legal Amazon Region

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