In April 2009, the first cases of pandemic (H1N1)-2009 influenza [H1N1sw] virus were detected in France. Virological surveillance was undertaken in reference laboratories of the seven French Defence Zones.
Unité Mixte de Recherche 190: Unité des Virus Emergents, Université de la Méditerranée et Institut de Recherche pour le Développement, Marseille, France.