Pandemic (H1N1) 2009 Outbreak on a Pig Farm, Argentina

DOI: 10.3201/eid1602.091230
Suggested citation for this article: Pereda A, Cappuccio J, Quiroga MA, Baumeister E, Insarralde L, Ibar M, et al. Pandemic (H1N1) 2009 outbreak on a pig farm, Argentina. Emerg Infect Dis. 2010 Feb; [Epub ahead of print]

Pandemic (H1N1) 2009 Outbreak on a Pig Farm, Argentina
Ariel Pereda,1 Javier Cappuccio,1 María A. Quiroga, Elsa Baumeister, Lucas Insarralde, Mariela Ibar, Ramón Sanguinetti, Maria L. Cannilla, Débora Franzese, Oscar E. Escobar Cabrera, Maria I. Craig, Agustina Rimondi, Mariana Machuca, Rosa T. Debenedetti, Carlos Zenobi, Leonardo Barral, Rodrigo Balzano, Santiago Capalbo, Adriana Risso, and Carlos J. Perfumo

Author affiliations: Instituto Nacional de Tecnología Agropecuaria, Castelar, Buenos Aires, Argentina (A. Pereda, M.I. Craig, A. Rimondi); Universidad Nacional de La Plata, La Plata, Buenos Aires (J. Cappuccio, M.A. Quiroga, L. Insarralde, M. Ibar, M. Machuca, C.J. Perfumo); Instituto Nacional de Enfermedades Infecciosas–Administración Nacional de Laboratorios e Institutos de Salud, Buenos Aires (E. Baumeister); 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); and private veterinary practice, Buenos Aires (S. Capalbo, A. Risso)
1These authors contributed equally to this article.

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.

Swine influenza viruses (SIVs) occur worldwide; they usually cause asymptomatic infection but occasionally cause outbreaks of varying intensity (1,2). In North America, the landscape of swine influenza has changed substantially since the late 1990s, when human (H3N2) viruses were first isolated from swine and triple reassortant viruses carrying influenza genes (TRIG) of avian, swine, and human origin and showing great reassortment flexibility emerged concurrently. TRIGs of influenza subtypes H3N2, H1N1, H3N1, and H1N2 appear to be circulating in swine in North America. Coincidentally, 1 of these TRIG viruses led to...

abrir aquí para acceder al documento EID completo en pdf de 8 páginas:
http://www.cdc.gov/eid/content/16/2/pdfs/09-1230.pdf