Frequência de anticorpos contra o vírus da língua azul em ovinos do estado do Ceará, Brasil

Pinheiro, R. R.; Souza, Thiago Sampaio de; Feitosa, A. L. V. L.; Aragão, M. A. C.; Lima, Carla Caroline Valença de; Costa, Joselito Nunes; Andrioli, A.; Teixeira, María Francisca Simas; Brito, Roberta Lomonte Lemos de

doi:10.1590/s1808-16572013000100006

Cited by 4 publications

(4 citation statements)

References 22 publications

(25 reference statements)

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“…BTV infection in sheep is usually associated with clinical signs such as fever, nasal discharge, sialorrhea, oral injury, face and tongue edema, depression, anorexia, and muscle weakness (Gang-Ma et al, 2017). In addition, reproductive disorders such as abortion, stillbirth, and progeny malformations have been observed (Pinheiro et al, 2013). The economic impact associated with this disease stems not only from direct losses in the affected herds but also from restrictions on trade of animals and their products (Dorneles et al, 2012).…”

Section: Detection Of Bluetongue Virus Antibodies In Sheep From Paranmentioning

confidence: 99%

“…In addition, vector development and proliferation is favorable in these regions (Dorneles et al, 2012). In Brazil, several studies have shown nationwide prevalence of bluetongue in different domestic and wild ruminant species (Costa, Lobato, Herrmann, Leite, & Haddad, 2006;Alves et al, 2009;Nogueira, Pituco, Stefano, Curci, & Cardoso, 2009;Tomich et al, 2009;Souza, Costa, Martinez, Costa, & Pinheiro, 2010;Mota et al, 2011;Dorneles et al, 2012;Pinheiro et al, 2013;Sbizera et al, 2017;Batista et al, 2018;Silva et al, 2018;Morikawa et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

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Detection of bluetongue virus antibodies in sheep from Paraná, Brazil

Sbizera

Filho

Lunardi

et al. 2020

SCA

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Bluetongue (BT) is an infectious and non-contagious disease caused by bluetongue virus (BTV) belonging to the genus Orbivirus. It is transmitted by a hematophagous vector, Culicoides sp., to ruminants, particularly to sheep, which are most susceptible to this disease. The main serological tests are agar gel immunodiffusion (AGID), which is recommended by the World Organization for Animal Health (OIE), and the competitive enzyme-linked immunosorbent assay (cELISA), which has the advantage of no cross-reaction with other orbiviruses. The aim was to compare the results of these two tests by conducting them on sera collected from sheep in the state of Paraná, Brazil. From March to October 2017, serum samples were collected from 270 sheep from 10 farms in six mesoregions of Paraná. The samples were subjected to AGID and cELISA to detect antibodies against BTV. Based on the test results, we classified the sheep as low, moderate, and high occurrence. The results demonstrated that 64.81% (175/270) of the sheep were seropositive through the cELISA test, showing a high occurrence, and 41.11% (111/270) were seropositive through the AGID test, indicating a moderate occurrence. The concordance between the tests was moderate (0.51) as determined by the Kappa coefficient. Among the studied farms, 90% (9/10) presented at least one seropositive sheep, and the number of animals tested positive by the cELISA test was higher than those by the AGID test. Favorable climate, which favors the presence and multiplication of the culicoid vector and the occurrence of infection, was the biggest predominant factor responsible for the obtained results. The low occurrence in farms with milder climate suggest that the presence of antibodies also occurs due to the low pathogenicity of circulating serotypes in the different mesoregions studied. It is concluded that BTV infection is present in the sheep herds in Paraná, and the occurrence was moderate detected by AGID test and high detected by cELISA test.

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Section: Detection Of Bluetongue Virus Antibodies In Sheep From Paranmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Detection of bluetongue virus antibodies in sheep from Paraná, Brazil

Sbizera

Filho

Lunardi

et al. 2020

SCA

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“…Over the last ten years in Brazil, several sero-epidemiological studies demonstrated the presence of the virus in different regions (TOMICH et al, 2009;ALVES et al, 2009;NOGUEIRA et al, 2009;SOUZA et al, 2010;MOTA et al, 2011;DORNELES et al, 2012;PINHEIRO et al, 2013;MORAES et al, 2015;NEGRI FILHO et al, 2016;ARAÚJO et al, 2017;SBIZERA et al, 2017). Serological tests consist mainly of agar gel immunodiffusion (AGID) and competitive enzyme immunoassay (ELISAc).…”

Section: Introductionmentioning

confidence: 99%

Bluetongue disease in sheep: a review

et al. 2019

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The present review aims to show the main aspects related to bluetongue virus (BTV) infection in sheep. The bluetongue (BT) is a viral, infectious, and non-contagious disease caused by a virus (BTV) of the Orbivirus genus, transmited by a hematophagous vector of the Culicoides genus, to domestic and wild ruminants, mainly to sheep, the most susceptible species. It is caused by the association of endemic with climate conditions, with high temperatures and humidity. Economic loss is directly linked to death, abortion, weight loss, loss of milk, and meat production, and, indirectly, to the restriction on the export of animals and their by-products. The study concludes that the BTV is worldwidely spread, and probably persists due to the warm and humid climate that leads to the proliferation of Culicoides sp., being necessary to adopt measures that reduce the risk factors associated to the BTV infection.

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“…Diversos inquéritos sorológicos demonstram que a infecção ocorre em ruminantes em diversas regiões do País (Abreu 1982, Castro et al 1992, Melo et al 2000, Konrad et al 2003, Costa et al 2006, Alves et al 2009, Tomich et al 2009, Venditti 2009, Antoniassi et al 2016, Souza et al 2010, Mota et al 2011, Dorneles et al 2012, Pinheiro et al, 2013.…”

Section: Introductionunclassified

Ocorrência e fatores de risco da infecção pelo vírus da língua azul em bovinos no Estado de Pernambuco

et al. 2018

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RESUMO: Objetivou-se com este estudo determinar os aspectos epidemiológicos da infecção pelo Vírus da Língua Azul (VLA) em bovinos leiteiros na microrregião de Garanhuns, Estado de Pernambuco, Brasil. Foram coletadas 384 amostras de soro de bovinos fêmeas em idade reprodutiva, procedentes de 20 propriedades dos 19 municípios que compõem a região. As amostras foram testadas com a prova de imunodifusão em gel de agarose (IDGA) para pesquisa de anticorpos anti-VLA. Observou-se ocorrência de 71,3% (274/384; IC 95% - 66,5% - 75,7%) de animais positivos. Em 100% das propriedades houve ao menos um animal soropositivo. Os fatores de risco identificados foram: presença de áreas alagadas (OR=11,8; p=0,001), não realizar controle de insetos (OR=2,1; p=0,033), rebanho aberto (OR=2,1; p=0,001) e utilização de inseminação artificial (OR=8,8; p=0,003). Este é o primeiro registro de detecção de anticorpos anti-VLA em bovinos no Estado de Pernambuco. Conclui-se que a infecção pelo VLA ocorre em bovinos na área estudada e sugere-se que medidas de controle baseadas no manejo higiênico-sanitário e biosseguridade sejam implantadas para evitar a propagação do vírus, tais como: eliminação de áreas alagadiças; controle de insetos; utilizar sêmen na inseminação artificial com atestado sanitário; realizar exames sorológicos ao adquirir animais.

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Frequência de anticorpos contra o vírus da língua azul em ovinos do estado do Ceará, Brasil

Cited by 4 publications

References 22 publications

Detection of bluetongue virus antibodies in sheep from Paraná, Brazil

Detection of bluetongue virus antibodies in sheep from Paraná, Brazil

Bluetongue disease in sheep: a review

Ocorrência e fatores de risco da infecção pelo vírus da língua azul em bovinos no Estado de Pernambuco

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