Swine influenza: clinical, serological, pathological, and virological cross‐sectional studies in nine farms in Argentina
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...
| Autores principales: | , , , , , , , |
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| Formato: | Artículo |
| Lenguaje: | Inglés |
| Publicado: |
International Society for Influenza and other Respiratory Virus Diseases
2019
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| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12123/4673 https://doi.org/10.1111/irv.12200 |
| _version_ | 1855483475685015552 |
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| author | Dibarbora, Marina Cappuccio, Javier Alejandro Olivera, Valeria Soledad Quiroga, Maria Alejandra Machuca, Mariana Perfumo, Carlos Juan Pérez, Daniel R. Pereda, Ariel Julian |
| author_browse | Cappuccio, Javier Alejandro Dibarbora, Marina Machuca, Mariana Olivera, Valeria Soledad Pereda, Ariel Julian Perfumo, Carlos Juan Pérez, Daniel R. Quiroga, Maria Alejandra |
| author_facet | Dibarbora, Marina Cappuccio, Javier Alejandro Olivera, Valeria Soledad Quiroga, Maria Alejandra Machuca, Mariana Perfumo, Carlos Juan Pérez, Daniel R. Pereda, Ariel Julian |
| author_sort | Dibarbora, Marina |
| collection | INTA Digital |
| description | 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. |
| format | Artículo |
| id | INTA4673 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2019 |
| publishDateRange | 2019 |
| publishDateSort | 2019 |
| publisher | International Society for Influenza and other Respiratory Virus Diseases |
| publisherStr | International Society for Influenza and other Respiratory Virus Diseases |
| record_format | dspace |
| spelling | INTA46732019-03-20T12:17:12Z Swine influenza: clinical, serological, pathological, and virological cross‐sectional studies in nine farms in Argentina Dibarbora, Marina Cappuccio, Javier Alejandro Olivera, Valeria Soledad Quiroga, Maria Alejandra Machuca, Mariana Perfumo, Carlos Juan Pérez, Daniel R. Pereda, Ariel Julian Virus de la Influenza Porcina Cerdo Virus de los Animales Inmunodiagnóstico Enfermedades de los Animales Swine Animal Viruses Immunodiagnosis Animal Diseases Swine Influenzavirus Argentina 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. Instituto de Virología Fil: Dibarbora, Marina. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Virología. Laboratorio de Aves y Porcinos; Argentina. Consejo Nacional de Investigaciones Científicas y Tecnológicas; Argentina Fil: Cappuccio, Javier Alejandro. Universidad Nacional de La Plata. Facultad de Ciencias Veterinarias. Cátedra de Patología Especial; Argentina. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Virología; Argentina Fil: Olivera, Valeria Soledad. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Virología. Laboratorio de Aves y Porcinos; Argentina Fil: Quiroga, Maria Alejandra. Universidad Nacional de La Plata. Facultad de Ciencias Veterinarias. Cátedra de Patología Especial; Argentina Fil: Machuca, Mariana. Universidad Nacional de La Plata. Facultad de Ciencias Veterinarias. Cátedra de Patología Especial; Argentina Fil: Perfumo, Carlos Juan. Universidad Nacional de La Plata. Facultad de Ciencias Veterinarias. Cátedra de Patología Especial; Argentina Fil: Pérez, Daniel R. University of Maryland. Virginia‐Maryland Regional College of Veterinary Medicine. Department of Veterinary Medicine; Estados Unidos Fil: Pereda, Ariel Julian. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Virología. Laboratorio de Aves y Porcinos; Argentina. Consejo Nacional de Investigaciones Científicas y Tecnológicas; Argentina 2019-03-20T12:13:22Z 2019-03-20T12:13:22Z 2013-12 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/4673 1750-2659 (Online) https://doi.org/10.1111/irv.12200 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 International Society for Influenza and other Respiratory Virus Diseases Influenza and other respiratory viruses 7 (Suppl. 4) : 10–15. (December 2013) |
| spellingShingle | Virus de la Influenza Porcina Cerdo Virus de los Animales Inmunodiagnóstico Enfermedades de los Animales Swine Animal Viruses Immunodiagnosis Animal Diseases Swine Influenzavirus Argentina Dibarbora, Marina Cappuccio, Javier Alejandro Olivera, Valeria Soledad Quiroga, Maria Alejandra Machuca, Mariana Perfumo, Carlos Juan Pérez, Daniel R. Pereda, Ariel Julian Swine influenza: clinical, serological, pathological, and virological cross‐sectional studies in nine farms in Argentina |
| title | Swine influenza: clinical, serological, pathological, and virological cross‐sectional studies in nine farms in Argentina |
| title_full | Swine influenza: clinical, serological, pathological, and virological cross‐sectional studies in nine farms in Argentina |
| title_fullStr | Swine influenza: clinical, serological, pathological, and virological cross‐sectional studies in nine farms in Argentina |
| title_full_unstemmed | Swine influenza: clinical, serological, pathological, and virological cross‐sectional studies in nine farms in Argentina |
| title_short | Swine influenza: clinical, serological, pathological, and virological cross‐sectional studies in nine farms in Argentina |
| title_sort | swine influenza clinical serological pathological and virological cross sectional studies in nine farms in argentina |
| topic | Virus de la Influenza Porcina Cerdo Virus de los Animales Inmunodiagnóstico Enfermedades de los Animales Swine Animal Viruses Immunodiagnosis Animal Diseases Swine Influenzavirus Argentina |
| url | http://hdl.handle.net/20.500.12123/4673 https://doi.org/10.1111/irv.12200 |
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