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 | Acesso ao texto completo restrito à biblioteca da Embrapa Suínos e Aves. Para informações adicionais entre em contato com cnpsa.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Suínos e Aves. |
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Data corrente: |
05/12/2018 |
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Data da última atualização: |
05/12/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SOUZA, C. K.; OLDIGES, D. P.; POETA, A. P. S.; VAZ JÚNIOR, I. S.; SCHAEFER, R.; GAVA, D.; ZANELLA, J. R. C.; CANAL, C. W.; CORBELLINI, L. G. |
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Afiliação: |
CARINE KUNZLER DE SOUZA, UFRGS; DAIANE PATRICIA OLDIGES, UFRGS; ANA PAULA SERAFINI POETA, UFRGS; ITABAJARA DA SILVA VAZ JUNIOR, UFRGS; REJANE SCHAEFER, CNPSA; DANIELLE GAVA, CNPSA; JANICE REIS CIACCI ZANELLA, CNPSA; CLAUDIO WAGECK CANAL, UFRGS; LUIS GUSTAVO CORBELLINI, UFRGS. |
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Título: |
Serological surveillance and factors associated with influenza A virus in backyard pigs in Southern Brazil. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
Zoonoses Public Health, p. 1-8, 2018. |
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DOI: |
10.1111/zph.12542 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: Backyard pig populations are not monitored for influenza A virus (IAV) in Brazil and there are limited data about seroprevalence and risk factors in these populations. Our goal was to assess possible factors associated with IAV seroprevalence in backyard pig populations using an indirect ELISA protocol based on a recombinant nucleoprotein. Following the IAV screening using NP‐ELISA, subtype‐specific serology based on hemagglutination inhibition (HI) assay of the ELISA‐positive pigs was conducted. The survey comprised a total of 1,667 sera samples collected in 2012 and 2014 in 479 holdings and the estimated seroprevalence was 5.3% (3.84%?7.33%) and 2.3% (1.34%?3.71%) in the respective years. In both years, H1N1pdm09 was the most prevalent subtype. The multivariable analysis showed main factors such as ?age,? ?sex,? ?number of suckling pigs? and ?neighbours raising pigs? that presented the greatest effect on IAV seroprevalence in these pig populations. These factors may be associated with the low biosecurity measures and management of backyard holdings. In addition, the low IAV seroprevalences found in these backyard pig populations could be related to a low number of animals in each pig holding and low animal movement/replacement that do not favour IAV transmission dynamics. This low frequency of H1N1pdm09 seropositive pigs could also be due to sporadic human‐to‐pig transmission of what is now a human seasonal influenza A virus; however, these factors should be explored in future studies. Herein, these results highlight the importance of IAV continued surveillance in backyard pig holdings, since it is poorly known which IAVs are circulating in these populations and the risk they could pose to public health and virus transmission to commercial farms. MenosAbstract: Backyard pig populations are not monitored for influenza A virus (IAV) in Brazil and there are limited data about seroprevalence and risk factors in these populations. Our goal was to assess possible factors associated with IAV seroprevalence in backyard pig populations using an indirect ELISA protocol based on a recombinant nucleoprotein. Following the IAV screening using NP‐ELISA, subtype‐specific serology based on hemagglutination inhibition (HI) assay of the ELISA‐positive pigs was conducted. The survey comprised a total of 1,667 sera samples collected in 2012 and 2014 in 479 holdings and the estimated seroprevalence was 5.3% (3.84%?7.33%) and 2.3% (1.34%?3.71%) in the respective years. In both years, H1N1pdm09 was the most prevalent subtype. The multivariable analysis showed main factors such as ?age,? ?sex,? ?number of suckling pigs? and ?neighbours raising pigs? that presented the greatest effect on IAV seroprevalence in these pig populations. These factors may be associated with the low biosecurity measures and management of backyard holdings. In addition, the low IAV seroprevalences found in these backyard pig populations could be related to a low number of animals in each pig holding and low animal movement/replacement that do not favour IAV transmission dynamics. This low frequency of H1N1pdm09 seropositive pigs could also be due to sporadic human‐to‐pig transmission of what is now a human seasonal influenza A virus; however... Mostrar Tudo |
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Thesagro: |
Gripe; Imunização; Soro; Suíno. |
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Thesaurus Nal: |
Disease surveillance; Enzyme-linked immunosorbent assay; Influenza; Serology; Swine. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02751naa a2200337 a 4500
001 2100808
005 2018-12-05
008 2018 bl uuuu u00u1 u #d
024 7 $a10.1111/zph.12542$2DOI
100 1 $aSOUZA, C. K.
245 $aSerological surveillance and factors associated with influenza A virus in backyard pigs in Southern Brazil.$h[electronic resource]
260 $c2018
520 $aAbstract: Backyard pig populations are not monitored for influenza A virus (IAV) in Brazil and there are limited data about seroprevalence and risk factors in these populations. Our goal was to assess possible factors associated with IAV seroprevalence in backyard pig populations using an indirect ELISA protocol based on a recombinant nucleoprotein. Following the IAV screening using NP‐ELISA, subtype‐specific serology based on hemagglutination inhibition (HI) assay of the ELISA‐positive pigs was conducted. The survey comprised a total of 1,667 sera samples collected in 2012 and 2014 in 479 holdings and the estimated seroprevalence was 5.3% (3.84%?7.33%) and 2.3% (1.34%?3.71%) in the respective years. In both years, H1N1pdm09 was the most prevalent subtype. The multivariable analysis showed main factors such as ?age,? ?sex,? ?number of suckling pigs? and ?neighbours raising pigs? that presented the greatest effect on IAV seroprevalence in these pig populations. These factors may be associated with the low biosecurity measures and management of backyard holdings. In addition, the low IAV seroprevalences found in these backyard pig populations could be related to a low number of animals in each pig holding and low animal movement/replacement that do not favour IAV transmission dynamics. This low frequency of H1N1pdm09 seropositive pigs could also be due to sporadic human‐to‐pig transmission of what is now a human seasonal influenza A virus; however, these factors should be explored in future studies. Herein, these results highlight the importance of IAV continued surveillance in backyard pig holdings, since it is poorly known which IAVs are circulating in these populations and the risk they could pose to public health and virus transmission to commercial farms.
650 $aDisease surveillance
650 $aEnzyme-linked immunosorbent assay
650 $aInfluenza
650 $aSerology
650 $aSwine
650 $aGripe
650 $aImunização
650 $aSoro
650 $aSuíno
700 1 $aOLDIGES, D. P.
700 1 $aPOETA, A. P. S.
700 1 $aVAZ JÚNIOR, I. S.
700 1 $aSCHAEFER, R.
700 1 $aGAVA, D.
700 1 $aZANELLA, J. R. C.
700 1 $aCANAL, C. W.
700 1 $aCORBELLINI, L. G.
773 $tZoonoses Public Health, p. 1-8, 2018.
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Embrapa Suínos e Aves (CNPSA) |
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| Registros recuperados : 2 | |
| 1. |  | SOUZA, C. K.; OLDIGES, D. P.; POETA, A. P. S.; VAZ JÚNIOR, I. S.; SCHAEFER, R.; GAVA, D.; ZANELLA, J. R. C.; CANAL, C. W.; CORBELLINI, L. G. Serological surveillance and factors associated with influenza A virus in backyard pigs in Southern Brazil. Zoonoses Public Health, p. 1-8, 2018.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Suínos e Aves. |
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| 2. | | SOUZA, C. K.; OLDIGES, D. P.; VAZ JUNIOR, I. da; CORBELLINI, L. G.; SCHAEFER, R.; GAVA, D.; ZANELLA, J. R. C.; CANAL, C. W. Indirect Elisa using a recombinant nucleoprotein for Influenza a vírus antibody detection in swine. In: CONGRESSO BRASILEIRO DE VIROLOGIA, 28.; ENCONTRO DE VIROLOGIA DO MERCOSUL, 12., 2017, Belo Horizonte. Trabalho pôsteres... Brasília: SBV, 2017.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Suínos e Aves. |
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| Registros recuperados : 2 | |
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