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

Salaberry, Sandra Renata Sampaio; Villalobos, Eliana Monteforte Cassaro; Castro, Jairo Lopes de; Nassar, Alessandra Figueiredo de Castro; Lima, Anna Monteiro Correia; Benites, Nilson Roberti

doi:10.1590/1808-1657000992013

Cited by 3 publications

(3 citation statements)

References 14 publications

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“…Approximately 90% of the analyzed properties had seropositive animals. These results differed from the findings of SALABERRY et al (2015) where at least one seropositive animal was observed at all the properties. Both the studies have generated a concern regarding this zoonosis, since the prevalence is high in a state that is traditionally a consumer of sheep meat.…”

Section: Discussioncontrasting

confidence: 99%

“…The identification by serology (except animals that recovered from diseases and not in preclinical status) before the clinical diseases could be more effective than periodic clinical inspection that cannot reveal subclinical carriers and the seropositive sheep could be disposed as a method for the control of transmission of C. pseudotuberculosis. The higher seroprevalence is important because C. pseudotuberculosis is considered a zoonosis in people exposed occupationally to infected animals (ROMERO-PEREZ et al, 2004;JOIN-LAMBERT et al, 2006;HEGGELUND et al, 2015). Although, the focus of this research was not on the clinical aspects, the results demonstrated the importance of seroprevalence for discovery of the pathogen in particular economic areas like Ceará State, where the ovine industry plays an important part.…”

Section: Discussionmentioning

confidence: 83%

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Seroprevalence of Corynebacterium pseudotuberculosis and Toxoplasma gondii in sheep in semi-arid region of Ceará state

et al. 2020

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The present study was conducted to investigate in 20 extensive sheep farms for the seroprevalence of Corynebacterium pseudotuberculosis (n=402) and Toxoplasma gondii (n=228). Enzyme-linked immunosorbent assay (ELISA) was used for the detection of antibodies to C. pseudotuberculosis/T. gondii. It was observed that C. pseudotuberculosis showed the highest prevalence in the region (34.07%) with statistically significant presence (p<0.05) in ewes. Antibodies to T. gondii was reported in 14.91% of the animals studied. About C. pseudotuberculosis/T. gondii coinfection the categories of rams showed significant (p<0.05) differences, suggesting that this gender could perpetuate the diseases in the flocks. It was concluded that the knowledge about the diseases in the region under study would facilitate the execution of prophylactic measures, especially against the diseases that pose risks to the public health and cause damages to the producer.

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Section: Discussioncontrasting

confidence: 99%

Section: Discussionmentioning

confidence: 83%

Seroprevalence of Corynebacterium pseudotuberculosis and Toxoplasma gondii in sheep in semi-arid region of Ceará state

et al. 2020

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“…não é bem conhecida, embora já haja relatos da presença do agente nessas espécies. A ocorrência de C. abortus em rebanhos de pequenos ruminantes já foi diagnosticada sorologicamente em alguns outros estados brasileiros [7,[19][20][21][22].…”

Section: Discussionunclassified

Seroprevalence and Risk Factors of Chlamydophila abortus Infection in Goats of the State of Rio Grande do Norte, Brazil

Araújo

Pinheiro

Andrioli

et al. 2018

Acta Scientiae. Vet.

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Background: Chlamydophilosis is a disease caused by the bacterium Chlamydophila abortus, responsible for reproductive damage in small ruminants, and economic losses to animal production. In addition, it is classified as a zoonosis once it presents symptoms similar to numerous bacterial and viral infections of the reproductive system, making clinical diagnosis difficult. The objective of this work was to estimate the seroprevalence of anti-C. abortus antibodies in goats and to identify the risk factors for the disease in two mesoregions of Rio Grande do Norte, Brazil.Material, Methods & Results: This research was carried out in two mesoregions of the State of Rio Grande do Norte (Central Potiguar - CP and West Potiguar - WP) located in the Northeast of Brazil. These mesoregions together represent 83% of the regional herd. A total of 54 properties were studied. Those are distributed in seven municipalities: Afonso Bezerra, Angicos, Lages and Pedro Avelino, in the CP mesoregion; and Apodi, Caraúbas, and Mossoró, in the OP mesoregion. We used 540 animals from herds characterized as non-defined breed (NDB) and native breed, regardless of their productive functions, being frequent the consortium of caprine and ovine species. Blood samples were collected through jugular venipuncture by vacuum system with 5 mL tubes without anticoagulant. After collection, the tubes were centrifuged at 1500 g for 15 min. Detection of anti-Chlamydophila sp. antibodies was performed by the Complement Fixation Test. In parallel with the collection, a questionnaire was applied addressing general property and producer characteristics. Seroprevalence of chlamydophilosis in the CP mesoregion was 3.04% (7/230) for the animals and 26.1% (6/23) for the properties, whereas, in the WP mesoregion, the values were 4.2% (13/310) and 35.5% (11/31), respectively. In the final logistic regression model, no variable analyzed was considered to be associated with a higher probability of C. abortus positive properties. There was no significant difference (P = 0.76) in the infection among the studied mesoregions. All the seven municipalities evaluated, had at least one positive property. No serology was found with titers greater than 1:32. The results of the suspects with titers of 1:16 were 3.9% (9/230) in the CP and 3.5% (11/310) in the WP mesoregion. None of the 82 breeding animals tested were C. abortus reagent, but three were suspected. The highest prevalence for the infection was seen in the matrices with 5.6% (18/321), followed by young females with 2.9% (1/35), young males with 1.2% (1/82) and breeding animals with 0% (0/82).Discussion: The seroprevalence to Chlamydophila abortus found in the state of Rio Grande do Norte was lower than that found in most Brazilian states, and even in other countries. The presence of properties with positive animals displays a risk of dissemination of the disease in the region. In addition, the presence of suspect animals may indicate a much larger number of positive animals. The existence of false-negative animals in the herd can lead to difficulties in controlling and eradicating this disease. Although none of the breeding animals were reagent to C. abortus in the CF test, the possibility of venereal transmission should not be discarded. As some animals remained suspects, it may indicate an initial infection phase and seroconversion process, possibly characterizing future transmitters of the bacterium via semen. However, even though seroprevalence was numerically low, this disease should be a cause for concern due to its severity and spread capacity among herds, and especially because it is a zoonosis. We conclude that chlamydophilosis is present in goat breeding in the state of Rio Grande do Norte, Brazil, and female animals are more susceptible to Chlamydophila abortus infection.

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Soroprevalência de Toxoplasma gondii, Neospora caninum e Brucella abortus em ovinos de Toledo, Paraná, Brasil

Bertuzzi

Weschenfelder²,

Webber³

et al. 2022

Semina: Ciênc. Agrár.

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A toxoplasmose é uma doença cosmopolita, causada pelo Toxoplasma gondii, com grande importância no contexto de produção animal e saúde pública como evidenciado nos dois maiores surtos da doença que ocorreram nas cidades brasileiras de em Santa Izabel do Ivai-PR e Santa Maria-RS. Enquanto o Neospora caninum é o agente causador da neosporose e a Brucella spp. causadora da brucelose, duas das principais causas de falhas reprodutivas em ruminantes, ocasionando problemas como abortamento, e responsáveis por significativas perdas econômicas na ovinocultura brasileira. Considerando a escassez de dados disponíveis sobre o tema para a região estudada, o objetivo do presente estudo foi avaliar a soroprevalência de anticorpos contra T. gondii, N. caninum e B. abortus em ovinos do município de Toledo, Paraná, Brasil. Durante o período de agosto de 2017 a julho de 2018 foram visitadas 22 propriedades e coletadas 240 amostras de sangue de fêmeas e machos em idade reprodutiva. Para a detecção de anticorpos contra o T. gondii e N. caninum foi utilizada a técnica de Imunofluorescência Indireta empregando ponto de corte ≥64 e ≥50, respectivamente. Para a detecção de anticorpos contra B. abortus foi realizada a triagem com o Antígeno Acidificado Tamponado e confirmação das amostras reagentes com o teste de Soroaglutinação Lenta e do 2-Mercaptoetanol. Das amostras analisadas, 27,08% (65/240) apresentaram anticorpos contra o T. gondii, estes se encontravam distribuídas em 81,82% (18/22) das propriedades, para N. caninum observou-se uma prevalência de 15,41% (37/240), distribuídas em 68,18% (15/22) das propriedades. Quanto ao resultado dos testes da B. abortus todas as amostras foram consideradas negativas. O presente estudo mostrou que a grande maioria das propriedades apresentaram animais positivos para os protozoários, os quais, principalmente T. gondii, poderiam estar causando problemas de abortamentos. Estes dados epidemiológicos fornecem embasamento para programas estratégicos a fim de realizar medidas de monitoramento e controle, evitando perdas econômicas na ovinocultura.

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

Cited by 3 publications

References 14 publications

Seroprevalence of Corynebacterium pseudotuberculosis and Toxoplasma gondii in sheep in semi-arid region of Ceará state

Seroprevalence of Corynebacterium pseudotuberculosis and Toxoplasma gondii in sheep in semi-arid region of Ceará state

Seroprevalence and Risk Factors of Chlamydophila abortus Infection in Goats of the State of Rio Grande do Norte, Brazil

Soroprevalência de Toxoplasma gondii, Neospora caninum e Brucella abortus em ovinos de Toledo, Paraná, Brasil

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