Toxoplasmosis in sheep—The last 20 years

Dubey, J. P.

doi:10.1016/j.vetpar.2009.02.026

Cited by 359 publications

(356 citation statements)

References 110 publications

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“…Os sinais clínicos em ovelhas gestantes são: mortes embrionária, reabsorção, mumificação, aborto e natimorto (Dubey, 2009).…”

Section: Palavras-chaveunclassified

“…Pesquisas demonstraram que a soroprevalência para toxoplasmose é menor em ovinos sob sistemas de manejo intensivo do que semiextensivo (Dubey, 2009;Ragozo et al, 2008;Romanelli et al, 2007). Isso foi observado na propriedade H que, além de utilizar o manejo intensivo, também não apresentava gatos domésticos nem a presença de felídeos selvagens, o que pode ter favorecido o menor percentual de anticorpos (10%) observado.…”

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Prevalência de anticorpos contra Toxoplasma gondii em ovinos no município de Uberlândia, MG

et al. 2016

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RESUMO O objetivo do estudo foi verificar a prevalência de anticorpos contraToxoplasma gondii em 334 amostras de sangue de ovinos oriundos de 12 propriedades localizadas no município de Uberlândia, Minas Gerais. O teste utilizado para a pesquisa foi a reação de imunofluorescência indireta (RIFI), com ponto de corte na diluição 1:64. Identificou-se a prevalência de 30,8% anticorpos anti-T. gondii em ovinos e a frequência de soropositivos por propriedade variou de 10 a 66,7%, sendo que todas as propriedades apresentaram pelo menos uma amostra reagente. Ao associar a soropositividade com sexo, idade e raça, observou-se diferença estatística significativa para faixa etária, de modo que os animais com menor idade (6 a 11 meses) foram menos reagentes do que os ovinos com maior idade. Esses resultados sugerem a adoção de medidas preventivas na região estudada.

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“…Os sinais clínicos em ovelhas gestantes são: mortes embrionária, reabsorção, mumificação, aborto e natimorto (Dubey, 2009).…”

Section: Palavras-chaveunclassified

Prevalência de anticorpos contra Toxoplasma gondii em ovinos no município de Uberlândia, MG

et al. 2016

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“…Toxoplasmosis is also an economically important disease of livestock, especially sheep. T. gondii infection in sheep is distributed worldwide, with seroprevalence of 20-91% in different countries [3]. These differences may occur due to the study area, associated factors, and criteria for animal selection, as well as the technique used for the epidemiological studies.…”

Section: Introductionmentioning

confidence: 99%

First report of seroprevalence of <i>Toxoplasma gondii</i> infection in sheep in Pomerania, northern Poland

Holec-Gąsior¹,

Dominiak-Górski²,

Kur³

2015

Ann Agric Environ Med.

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Introduction and objective. Toxoplasmosis is parasitic disease which has economic relevance for both veterinary and human medicine. In sheep, toxoplasmosis is a major cause of abortion and can thus cause reproductive problems. The current study aimed to determine the occurrence of anti-Toxoplasma gondii IgG antibodies in sheep from 13 districts of northern Poland and thereby obtain actual data about T. gondii seroprevalence in this population of animals. Materials and methods. Blood samples from 1,646 animals from 99 herds were collected, and an in-house enzymelinked immunosorbent assay (ELISA) based on native Toxoplasma lysate antigen (TLA) was used for serological testing. The diagnostic sensitivity of diagnostic test used in this study was 98.6%, and specificity 94.9% for the group of 113 sheep sera (74 seropositive and 39 seronegative) previously characterized by using an commercial agglutination test. Results. Antibodies against T. gondii were found in 921 (55.9%) of all tested animals. The percentage of infected sheep was the highest (67.6%) for older animals (>6 years), whereas for younger ones it was significantly lower (50.1% -57.2% for 1-5-year-old animals, respectively). Furthermore, a higher percentage of seropositive animals was noted among males (63%) than females (55.5%). The results also showed that the size of the herd is not a factor which may affect the seroprevalence of T. gondii infection in the examined population of sheep. Conclusion. The results of this study indicate that T. gondii infection in sheep from region of northern Poland is relatively high, and consumption of ovine meat and milk can be regarded as a significant source of infection for humans.

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“…It was first described by Hartley et al (1954) which even today is known as one of the major causes of sheep abortion world wide (Buxton 1991). Another characteristic of vertical transmission of T. gondii is that this kind of transmission can occur more frequently than what was previously thought (Duncanson et al 2001;Morely et al 2005Morely et al , 2007Hide et al 2009;Innes et al 2009;Dubey 2009). …”

Section: Introductionmentioning

confidence: 94%

“…There are few reports of congenital toxoplasmosis outbreak all around the world but It has been reported that 7-32 % of ovine abortion outbreaks in New Zealand from 1973 to 1989 were caused by T. gondii with higher rates in 1980s (Gumbrell 1990;Orr 1989;Dubey 2009). This kind of outbreak has not been reported in Iran.…”

Section: Introductionmentioning

confidence: 99%

Outbreak of ovine congenital toxoplasmosis in Iran, confirmed by different diagnostic methods

et al. 2014

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Toxoplasma gondii is a zoonotic obligatory intracellular protozoan parasite with the capability to infect all warm-blooded animals. One of the great concerns is that it can lead to ovine abortion in sheep growing industry. Different diagnostic methods such as serology, pathology, immunohistochemistry, bioassay and molecular detection have been used in order to detect ovine abortion associated with T. gondii. In this case, an outbreak of congenital toxoplasmosis based on serological, macroscopic, pathological detection and isolation of T. gondii by bioassay is described and emphasized on the importance of this route of transmission that caused lamb losses and an increase in possible sources of infection for human and environment.

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Toxoplasmosis in sheep—The last 20 years

Cited by 359 publications

References 110 publications

Prevalência de anticorpos contra Toxoplasma gondii em ovinos no município de Uberlândia, MG

Prevalência de anticorpos contra Toxoplasma gondii em ovinos no município de Uberlândia, MG

First report of seroprevalence of <i>Toxoplasma gondii</i> infection in sheep in Pomerania, northern Poland

Outbreak of ovine congenital toxoplasmosis in Iran, confirmed by different diagnostic methods

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