Epidemiological and virological findings during multiple outbreaks of equine influenza in South America in 2012
Background: In 2012, equine influenza (EI) virus was confirmed as the cause of outbreaks of respiratory disease in horses throughout South America. In Uruguay and Argentina, hundreds of vaccinated thoroughbred horses in training and racing facilities were clinically affected. Objective: To characte...
| Autores principales: | , , , , , , , |
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| Formato: | Artículo |
| Lenguaje: | Inglés |
| Publicado: |
2017
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| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12123/1222 http://onlinelibrary.wiley.com/doi/10.1111/irv.12349/epdf |
| _version_ | 1855482850063679488 |
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| author | Olguin Perglione, Cecilia Rimondi, Agustina Gildea, Sarah Miño, Samuel Vissani, Maria Aldana Carossino, Mariano Cullinane, Ann Barrandeguy, Maria Edith |
| author_browse | Barrandeguy, Maria Edith Carossino, Mariano Cullinane, Ann Gildea, Sarah Miño, Samuel Olguin Perglione, Cecilia Rimondi, Agustina Vissani, Maria Aldana |
| author_facet | Olguin Perglione, Cecilia Rimondi, Agustina Gildea, Sarah Miño, Samuel Vissani, Maria Aldana Carossino, Mariano Cullinane, Ann Barrandeguy, Maria Edith |
| author_sort | Olguin Perglione, Cecilia |
| collection | INTA Digital |
| description | Background: In 2012, equine influenza (EI) virus was confirmed as the cause of outbreaks of respiratory disease in horses throughout South America. In Uruguay and Argentina, hundreds of vaccinated thoroughbred horses in training and racing facilities were clinically affected.
Objective: To characterise the EI viruses detected during the outbreak in Uruguay and Argentina.
Methods: Virus was detected in nasopharyngeal swabs by a pan-reactive influenza type A real-time RT-PCR. The nucleotide sequence of the HA1 gene was determined and analysed phylogenetically using mega 5 software. Amino acid sequences alignments were constructed and virus was antigenically characterised with specific ferret antisera. Paired serum samples were tested by haemagglutination inhibition and single radial haemolysis.
Results: The diagnosis of EIV was confirmed by real-time RT-PCR, virus isolation and serological testing. The phylogenetic analysis of HA1 gene sequences of 18 EI viruses indicated that all of them belong to clade 1 of the Florida sublineage of the American lineage and are closely related to viruses isolated in the United States in 2012. The HA1 of viruses identified in horses in racing facilities in Maroñas, Uruguay, and in Palermo, Argentina, displayed 100% amino acid sequence identity and were identical to that of a virus isolated in Dubai in 2012, from vaccinated endurance horses recently imported from Uruguay.
Conclusions: The surveillance data reported illustrate the international spread of EI viruses and support the recommendations of the OIE expert surveillance panel to include viruses of the Florida sublineage in vaccines. |
| format | Artículo |
| id | INTA1222 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2017 |
| publishDateRange | 2017 |
| publishDateSort | 2017 |
| record_format | dspace |
| spelling | INTA12222023-04-12T16:06:42Z Epidemiological and virological findings during multiple outbreaks of equine influenza in South America in 2012 Olguin Perglione, Cecilia Rimondi, Agustina Gildea, Sarah Miño, Samuel Vissani, Maria Aldana Carossino, Mariano Cullinane, Ann Barrandeguy, Maria Edith Equine Influenzavirus Animal Diseases Horses Epidemiology Virus de la Influenza Equina Enfermedades de los Animales Caballos Epidemiología América del Sur Background: In 2012, equine influenza (EI) virus was confirmed as the cause of outbreaks of respiratory disease in horses throughout South America. In Uruguay and Argentina, hundreds of vaccinated thoroughbred horses in training and racing facilities were clinically affected. Objective: To characterise the EI viruses detected during the outbreak in Uruguay and Argentina. Methods: Virus was detected in nasopharyngeal swabs by a pan-reactive influenza type A real-time RT-PCR. The nucleotide sequence of the HA1 gene was determined and analysed phylogenetically using mega 5 software. Amino acid sequences alignments were constructed and virus was antigenically characterised with specific ferret antisera. Paired serum samples were tested by haemagglutination inhibition and single radial haemolysis. Results: The diagnosis of EIV was confirmed by real-time RT-PCR, virus isolation and serological testing. The phylogenetic analysis of HA1 gene sequences of 18 EI viruses indicated that all of them belong to clade 1 of the Florida sublineage of the American lineage and are closely related to viruses isolated in the United States in 2012. The HA1 of viruses identified in horses in racing facilities in Maroñas, Uruguay, and in Palermo, Argentina, displayed 100% amino acid sequence identity and were identical to that of a virus isolated in Dubai in 2012, from vaccinated endurance horses recently imported from Uruguay. Conclusions: The surveillance data reported illustrate the international spread of EI viruses and support the recommendations of the OIE expert surveillance panel to include viruses of the Florida sublineage in vaccines. Fil: Olguin Perglione, Cecilia. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Virología; Argentina Fil: Rimondi, Agustina. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Virología; Argentina Fil: Gildea, Sarah. The Irish Equine Centre. Virology Unit; Irlanda Fil: Miño, Samuel. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Virología; Argentina Fil: Vissani, Aldana. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Virología; Argentina Fil: Carossino, Mariano. Universidad del Salvador. Escuela de Veterinaria. Cátedra de Enfermedades Infecciosas; Argentina. University of Kentucky. Department of Veterinary Science. Maxwell H. Gluck Equine Research Center; Estados Unidos Fil: Cullinane, Ann. The Irish Equine Centre. Virology Unit; Irlanda Fil: Barrandeguy, Maria Edith. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Virología; Argentina. Universidad del Salvador. Escuela de Veterinaria. Cátedra de Enfermedades Infecciosas; Argentina 2017-09-14T14:53:57Z 2017-09-14T14:53:57Z 2016-01 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/1222 http://onlinelibrary.wiley.com/doi/10.1111/irv.12349/epdf 1750-2659 DOI: 10.1111/irv.12349 eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf 2012 Influenza and Other Respiratory Viruses 10 (1) : 37–46 (January 2016) |
| spellingShingle | Equine Influenzavirus Animal Diseases Horses Epidemiology Virus de la Influenza Equina Enfermedades de los Animales Caballos Epidemiología América del Sur Olguin Perglione, Cecilia Rimondi, Agustina Gildea, Sarah Miño, Samuel Vissani, Maria Aldana Carossino, Mariano Cullinane, Ann Barrandeguy, Maria Edith Epidemiological and virological findings during multiple outbreaks of equine influenza in South America in 2012 |
| title | Epidemiological and virological findings during multiple outbreaks of equine influenza in South America in 2012 |
| title_full | Epidemiological and virological findings during multiple outbreaks of equine influenza in South America in 2012 |
| title_fullStr | Epidemiological and virological findings during multiple outbreaks of equine influenza in South America in 2012 |
| title_full_unstemmed | Epidemiological and virological findings during multiple outbreaks of equine influenza in South America in 2012 |
| title_short | Epidemiological and virological findings during multiple outbreaks of equine influenza in South America in 2012 |
| title_sort | epidemiological and virological findings during multiple outbreaks of equine influenza in south america in 2012 |
| topic | Equine Influenzavirus Animal Diseases Horses Epidemiology Virus de la Influenza Equina Enfermedades de los Animales Caballos Epidemiología América del Sur |
| url | http://hdl.handle.net/20.500.12123/1222 http://onlinelibrary.wiley.com/doi/10.1111/irv.12349/epdf |
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