Authors: Laure Fonteneau; Nathalie Jourdan Da Silva; Laetitia Fabre; Philip Ashton; Mia Torpdahl; Luise Müller; Brahim Bouchrif; Abdellah El Boulani; Eleni Valkanou; Wesley Mattheus; Ingrid Friesema; Silvia Herrera Leon; Carmen Varela Martínez; Joël Mossong; Ettore Severi; Kathie Grant; François-Xavier Weill; Céline M Gossner; Sophie Bertrand; Tim Dallman; Simon Le Hello Journal: Euro Surveill Date: 2017-02-16