%0 Journal Article %A New influenza A(H1N1) investigation teams*, Collective %T New influenza A(H1N1) virus infections in France, April – May 2009 %D 2009 %J Eurosurveillance %V 14 %N 21 %P 19221 %R doi:https://doi.org/10.2807/ese.14.21.19221-en %K swine influenza %K pandemic %K swine flu %K influenza %K H1N1 %K A(H1N1)v %K novel influenza A(H1N1) %U https://www.eurosurveillance.org/content/10.2807/ese.14.21.19221-en