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PREVALENCE OF ANTIBODIES AGAINST INFLUENZA VIRUS IN NON-VACCINATED EQUINES FROM THE BRAZILIAN PANTANAL

The prevalence of antibodies against Equine Influenza Virus (EIV) was determined in 529 equines living on ranches in the municipality of Poconé, Pantanal area of Brazil, by means of the hemagglutination inhibition test, using subtype H3N8 as antigen. The distribution and possible association among p...

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Autores principales: Silva, Lucas Gaíva E, Borges, Alice Mamede Costa Marques, Villalobos, Eliana Monteforte Cassaro, Lara, Maria do Carmo Custodio Souza Hunold, Cunha, Elenice Maria Siquetin, de Oliveira, Anderson Castro Soares, Braga, Ísis Assis, Aguiar, Daniel Moura
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Instituto de Medicina Tropical 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4296868/
https://www.ncbi.nlm.nih.gov/pubmed/25351542
http://dx.doi.org/10.1590/S0036-46652014000600006
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author Silva, Lucas Gaíva E
Borges, Alice Mamede Costa Marques
Villalobos, Eliana Monteforte Cassaro
Lara, Maria do Carmo Custodio Souza Hunold
Cunha, Elenice Maria Siquetin
de Oliveira, Anderson Castro Soares
Braga, Ísis Assis
Aguiar, Daniel Moura
author_facet Silva, Lucas Gaíva E
Borges, Alice Mamede Costa Marques
Villalobos, Eliana Monteforte Cassaro
Lara, Maria do Carmo Custodio Souza Hunold
Cunha, Elenice Maria Siquetin
de Oliveira, Anderson Castro Soares
Braga, Ísis Assis
Aguiar, Daniel Moura
author_sort Silva, Lucas Gaíva E
collection PubMed
description The prevalence of antibodies against Equine Influenza Virus (EIV) was determined in 529 equines living on ranches in the municipality of Poconé, Pantanal area of Brazil, by means of the hemagglutination inhibition test, using subtype H3N8 as antigen. The distribution and possible association among positive animal and ranches were evaluated by the chi-square test, spatial autoregressive and multiple linear regression models. The prevalence of antibodies against EIV was estimated at 45.2% (95% CI 30.2 - 61.1%) with titers ranging from 20 to 1,280 HAU. Seropositive equines were found on 92.0% of the surveyed ranches. Equine from non-flooded ranches (66.5%) and negativity in equine infectious anemia virus (EIAV) (61.7%) were associated with antibodies against EIV. No spatial correlation was found among the ranches, but the ones located in non-flooded areas were associated with antibodies against EIV. A negative correlation was found between the prevalence of antibodies against EIV and the presence of EIAV positive animals on the ranches. The high prevalence of antibodies against EIV detected in this study suggests that the virus is circulating among the animals, and this statistical analysis indicates that the movement and aggregation of animals are factors associated to the transmission of the virus in the region.
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spelling pubmed-42968682015-01-20 PREVALENCE OF ANTIBODIES AGAINST INFLUENZA VIRUS IN NON-VACCINATED EQUINES FROM THE BRAZILIAN PANTANAL Silva, Lucas Gaíva E Borges, Alice Mamede Costa Marques Villalobos, Eliana Monteforte Cassaro Lara, Maria do Carmo Custodio Souza Hunold Cunha, Elenice Maria Siquetin de Oliveira, Anderson Castro Soares Braga, Ísis Assis Aguiar, Daniel Moura Rev Inst Med Trop Sao Paulo Influenza The prevalence of antibodies against Equine Influenza Virus (EIV) was determined in 529 equines living on ranches in the municipality of Poconé, Pantanal area of Brazil, by means of the hemagglutination inhibition test, using subtype H3N8 as antigen. The distribution and possible association among positive animal and ranches were evaluated by the chi-square test, spatial autoregressive and multiple linear regression models. The prevalence of antibodies against EIV was estimated at 45.2% (95% CI 30.2 - 61.1%) with titers ranging from 20 to 1,280 HAU. Seropositive equines were found on 92.0% of the surveyed ranches. Equine from non-flooded ranches (66.5%) and negativity in equine infectious anemia virus (EIAV) (61.7%) were associated with antibodies against EIV. No spatial correlation was found among the ranches, but the ones located in non-flooded areas were associated with antibodies against EIV. A negative correlation was found between the prevalence of antibodies against EIV and the presence of EIAV positive animals on the ranches. The high prevalence of antibodies against EIV detected in this study suggests that the virus is circulating among the animals, and this statistical analysis indicates that the movement and aggregation of animals are factors associated to the transmission of the virus in the region. Instituto de Medicina Tropical 2014 /pmc/articles/PMC4296868/ /pubmed/25351542 http://dx.doi.org/10.1590/S0036-46652014000600006 Text en http://creativecommons.org/licenses/by-nc/3.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License, which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Influenza
Silva, Lucas Gaíva E
Borges, Alice Mamede Costa Marques
Villalobos, Eliana Monteforte Cassaro
Lara, Maria do Carmo Custodio Souza Hunold
Cunha, Elenice Maria Siquetin
de Oliveira, Anderson Castro Soares
Braga, Ísis Assis
Aguiar, Daniel Moura
PREVALENCE OF ANTIBODIES AGAINST INFLUENZA VIRUS IN NON-VACCINATED EQUINES FROM THE BRAZILIAN PANTANAL
title PREVALENCE OF ANTIBODIES AGAINST INFLUENZA VIRUS IN NON-VACCINATED EQUINES FROM THE BRAZILIAN PANTANAL
title_full PREVALENCE OF ANTIBODIES AGAINST INFLUENZA VIRUS IN NON-VACCINATED EQUINES FROM THE BRAZILIAN PANTANAL
title_fullStr PREVALENCE OF ANTIBODIES AGAINST INFLUENZA VIRUS IN NON-VACCINATED EQUINES FROM THE BRAZILIAN PANTANAL
title_full_unstemmed PREVALENCE OF ANTIBODIES AGAINST INFLUENZA VIRUS IN NON-VACCINATED EQUINES FROM THE BRAZILIAN PANTANAL
title_short PREVALENCE OF ANTIBODIES AGAINST INFLUENZA VIRUS IN NON-VACCINATED EQUINES FROM THE BRAZILIAN PANTANAL
title_sort prevalence of antibodies against influenza virus in non-vaccinated equines from the brazilian pantanal
topic Influenza
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4296868/
https://www.ncbi.nlm.nih.gov/pubmed/25351542
http://dx.doi.org/10.1590/S0036-46652014000600006
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