Performance of influenza case definitions for influenza community surveillance: based on the French influenza surveillance network GROG, 2009-2014 Casalegno, Jean-Sebastien and Eibach, Daniel and Valette, Martine and Enouf, Vincent and Daviaud, Isabelle and Behillil, Sylvie and Vabret, Astrid and Soulary, Jean Claude and Benchaib, Mehdi and Cohen, Jean Marie and van der Werf, Sylvie and Mosnier, Anne and Lina, Bruno, Eurosurveillance, 22, 30504 (2017), https://doi.org/10.2807/1560-7917.ES.2017.22.14.30504