title: [Flu epidemic: HUG, everyone must wear a mask].
authors: Sophie
authors: S
authors: Davaris
mesh_terms: D006785:Hospitals, University; D006801:Humans; D007251:Influenza, Human / Q000453:epidemiology / Q000517:prevention & control*; D008397:Masks; D013557:Switzerland / Q000453:epidemiology