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Volume 18, Number 10—October 2012

Dispatch

Influenza A(H1N1)pdm09 Virus in Pigs, Réunion Island

Eric Cardinale1Comments to Author , Hervé Pascalis1, Sarah Temmam2, Séverine Hervé2, Aure Saulnier, Magali Turpin, Nicolas Barbier, Johny Hoarau, Stéphane Quéguiner, Stéphane Gorin, Coralie Foray, Matthieu Roger, Vincent Porphyre, Paul André, Thierry Thomas, Xavier de Lamballerie, Koussay Dellagi, and Gaëlle Simon
Author affiliations: Le Centre de Recherche et de Veille sur les Maladies Emergentes dans l’Océan Indien, Sainte-Clotilde, Ile de la Réunion, France (E. Cardinale, H. Pascalis, S. Temmam, M. Turpin, J. Hoarau, C. Foray, M. Roger, K. Dellagi); Centre de Coopération Internationale en Recherche Agronomique pour le Développement, Montpellier, France (E. Cardinale, J. Hoarau, C. Foray, M. Roger, V. Porphyre); Institut de Recherche pour le Développement, Sainte-Clotilde (H. Pascalis, M. Turpin, K. Dellagi); Centre National de la Recherche Scientifique–Université de Lyon, Lyon, France (S. Temmam); Agence Nationale de Sécurité Sanitaire, de l’alimentation, de l’Environnement, et du Travail (ANSES), National Reference Laboratory for Swine Influenza, Ploufragan, France (S. Hervé, A. Saulnier, N. Barbier, S. Quéguiner, S. Gorin, G. Simon); Clinique Vétérinaire, Saint-Louis, Ile de la Réunion (P. André); Coopérative des Producteurs de Porcs de la Réunion, Saint-Pierre, Ile de la Réunion (T. Thomas); and Université de la Méditerranée, Marseille, France (X. de Lamballerie)

Main Article

Table 1

Antigenic characterization of A(H1N1)pdm09-like influenza viruses isolated from pigs, Réunion Island, 2010*

Virus strain HI titers† obtained with reference swine hyperimmune serum samples directed against
California/04/09‡ Sw/England/ 117316/86§ Sw/Cotes d'Armor/0388/09¶ Sw/Flandres/1/98# Sw/Scotland/ 410440/94**
A/Sw/La Reunion/0164/10 1,280 160 40 <10 <10
A/Sw/La Reunion/110348/10 1,280 80 160 10 20
A/Sw/La Reunion/0167/10 640 80 40 <10 <10
A/Sw/La Reunion/110194/10 640 80 20 <10 10

*HI, hemagglutination inhibition.
†HI tests were performed according to standard procedure (5).Titers are expressed as the reciprocal of the highest dilution of serum that inhibits 4 hemagglutination units of virus.
‡A(H1N1)pdm09 lineage.
§Classical swine A(H1N1).
¶Avian-like swine A(H1N1).
#Human-like reassortant swine A(H3N2).
**Human-like reassortant swine A(H1N2).

Main Article

1These authors contributed equally to this article.

2These authors contributed equally to this article.

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