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Artículo

Swine influenza: clinical, serological, pathological, and virological cross-sectional studies in nine farms in Argentina

Dibárbora, MarinaIcon ; Cappuccio, Javier AlejandroIcon ; Olivera, Valeria; Quiroga, Maria; Machuca, Mariana Alejandra; Perfumo, Carlos Juan; Pérez, Daniel Roberto; Pereda, Ariel JuliánIcon
Fecha de publicación: 14/11/2013
Editorial: Wiley Blackwell Publishing, Inc
Revista: Influenza And Other Respiratory Viruses
ISSN: 1750-2640
Idioma: Inglés
Tipo de recurso: Artículo publicado

Resumen

Background Influenza A viruses (IAV) are important pathogens responsible for economic losses in the swine industry and represent a threat to public health. In Argentina, clinical, pathological, and virological findings suggest that IAV infection is widespread among pig farms. In addition, several subtypes of IAV, such as pH1N1, H3N2, δ1H1N1, and δ2H1N2, have been reported. Objectives To evaluate the infection patterns of influenza virus in nine pig farms in Argentina. Methods Clinical, serological, pathological, and virological cross-sectional studies were conducted. Results Clinical and pathological results were characteristic of endemic influenza infection in eight of the nine farms studied. By rRT-PCR, six of the nine farms were positive to influenza. Five IAV were obtained. Genome analysis determined that four of the isolations were pH1N1 and that the remaining one was a reassortant human origin H3N2 virus containing pandemic internal genes. Serological results showed that all farms were positive to influenza A antibodies. Moreover, the hemagglutination inhibition test showed that infection with viruses containing HA′s from different subtypes (pH1, δ1H1, δ2H1, and H3) is present among the farms studied and that coinfections with two or more subtypes were present in 80.5% of positive pigs. Conclusions Because vaccines against IAV are not licensed in Argentina, these results reflect the situation of IAV infection in non-vaccinated herds. This study provides more information about the circulation and characteristics of IAV in a poorly surveyed region. This study provides more data that will be used to evaluate the tools necessary to control this disease.
Palabras clave: Argentina , Influenza , Pathology , Serology , Swine , Virology
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/24278
URL: http://onlinelibrary.wiley.com/doi/10.1111/irv.12200/abstract
DOI: http://dx.doi.org/10.1111/irv.12200
Colecciones
Articulos(CCT - LA PLATA)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - LA PLATA
Citación
Dibárbora, Marina; Cappuccio, Javier Alejandro; Olivera, Valeria; Quiroga, Maria; Machuca, Mariana Alejandra; et al.; Swine influenza: clinical, serological, pathological, and virological cross-sectional studies in nine farms in Argentina; Wiley Blackwell Publishing, Inc; Influenza And Other Respiratory Viruses; 7; 4; 14-11-2013; 10-15
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