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      Pandemic (H1N1) 2009 Outbreak on Pig Farm, Argentina

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          Abstract

          In June–July 2009, an outbreak of pandemic (H1N1) 2009 infection occurred on a pig farm in Argentina. Molecular analysis indicated that the virus was genetically related to the pandemic (H1N1) 2009 influenza virus strain. The outbreak presumably resulted from direct human-to-pig transmission.

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          Pathogenesis and transmission of the novel swine-origin influenza virus A/H1N1 after experimental infection of pigs.

          Sasan Fereidouni, Donata Kalthoff, Angele Breithaupt … (2009)
          Influenza virus A/H1N1, which is currently causing a pandemic, contains gene segments with ancestors in the North American and Eurasian swine lineages. To get insights into virus replication dynamics, clinical symptoms and virus transmission in pigs, we infected animals intranasally with influenza virus A/Regensburg/D6/09/H1N1. Virus excretion in the inoculated pigs was detected in nasal swabs from 1 day post-infection (p.i.) onwards and the pigs developed generally mild symptoms, including fever, sneezing, nasal discharge and diarrhoea. Contact pigs became infected, shed virus and developed clinical symptoms similar to those in the inoculated animals. Plasma samples of all animals remained negative for virus RNA. Nucleoprotein- and haemagglutinin H1-specific antibodies could be detected by ELISA 7 days p.i. CD4(+) T cells became activated immediately after infection and both CD4(+) and CD8(+) T-cell populations expanded from 3 to 7 days p.i., coinciding with clinical signs. Contact chickens remained uninfected, as judged by the absence of virus excretion, clinical signs and seroconversion.
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            A monoclonal-antibody-based immunohistochemical method for the detection of swine influenza virus in formalin-fixed, paraffin-embedded tissues.

            Patrick Halbur, B Janke, Thomas Vincent … (1997)
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              Influenza A (H1N1) infection in pigs.

              Gaëlle Simon, Emanuela Foni, Mikhail Matrosovich … (2009)
              Article 0 comments Cited 15 times – based on 0 reviews     Review now
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                Author and article information

                Journal
                Journal ID (nlm-ta): Emerg Infect Dis
                Journal ID (publisher-id): EID
                Title: Emerging Infectious Diseases
                Publisher: Centers for Disease Control and Prevention
                ISSN (Print): 1080-6040
                ISSN (Electronic): 1080-6059
                Publication date (Print): February 2010
                Volume: 16
                Issue: 2
                Pages: 311-313
                Affiliations
                [1]Instituto Nacional de Tecnología Agropecuaria, Castelar, Buenos Aires, Argentina (A. Pereda, M.I. Craig, A. Rimondi)
                [2]Universidad Nacional de La Plata, La Plata, Buenos Aires (J. Cappuccio, M.A. Quiroga, L. Insarralde, M. Ibar, M. Machuca, C.J. Perfumo)
                [3]Instituto Nacional de Enfermedades Infecciosas–Administración Nacional de Laboratorios e Institutos de Salud, Buenos Aires (E. Baumeister)
                [4]Servicio Nacional de Sanidad Animal, Martínez, Buenos Aires (R. Sanguinetti, M.L. Cannilla, D. Franzese, O.E. Escobar Cabrera, R.T. Debenedetti, C. Zenobi, L. Barral, R. Balzano)
                [5]private veterinary practice, Buenos Aires (S. Capalbo, A. Risso)
                [1 ]These authors contributed equally to this article.
                Author notes
                Address for correspondence: Ariel Pereda, Instituto de Virologia–CICVyA-INTA, Casilla de Correo 77 (1708) Morón, Pcia de Buenos Aires, Argentina; email: apereda@ 123456cnia.inta.gov.ar
                Article
                Publisher ID: 09-1230
                DOI: 10.3201/eid1602.091230
                PMC ID: 2958022
                PubMed ID: 20113566
                SO-VID: 1195efd8-306e-4c41-bcf5-4d6dbef05151
                History
                Categories
                Subject: Dispatch

                ScienceOpen disciplines: Infectious disease & Microbiology
                Keywords: epidemiology,expedited,pandemic h1n1 2009,pigs,influenza,dispatch,immunohistochemistry,viruses,argentina,pathology,real-time rt-pcr
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                ScienceOpen disciplines: Infectious disease & Microbiology
                Keywords: epidemiology, expedited, pandemic h1n1 2009, pigs, influenza, dispatch, immunohistochemistry, viruses, argentina, pathology, real-time rt-pcr

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