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. 2010 Feb;16(2):304-7.
doi: 10.3201/eid1602.091230.

Pandemic (H1N1) 2009 outbreak on pig farm, Argentina

Ariel Pereda  1 , Javier Cappuccio, Maria A Quiroga, Elsa Baumeister, Lucas Insarralde, Mariela Ibar, Ramon Sanguinetti, Maria L Cannilla, Debora 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, Carlos J Perfumo
Affiliations

Pandemic (H1N1) 2009 outbreak on pig farm, Argentina

Ariel Pereda et al. Emerg Infect Dis. 2010 Feb.

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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Figures

Figure
Figure
Postmortem samples from clinically affected pigs, Argentina, 2009. A) Macroscopic lung lesions with distinctive scattered dark-red foci of lobular consolidation (chessboard-like) in all lobes. B) Severe necrotizing bronchiolitis with partially denuded epithelia. Hematoxylin-eosin stain; original magnification ×400. C) General view of the alveolar walls showing moderate interstitial thickening by leukocytes. Hematoxin-eosin stain; original magnification ×200. D) Bronchioli. Positive-labeled nuclei and cytoplasm of bronchial epithelial cells and mononuclear cells in the alveoli. 3,3′-diaminobenzidine counterstain with hematoxylin stain; original magnification ×200.
See this image and copyright information in PMC

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