title: Influenza - the need to stay ahead of the virus.
authors: Unit of Molecular Genetics of RNA viruses, Institut Pasteur, Universite Paris Diderot-Sorbonne Paris Cite, Paris, France.
authors: S
authors: S
authors: van der Werf
authors: D
authors: D
authors: Levy-Bruhl
mesh_terms: D006801:Humans; D053118:Influenza A Virus, H1N1 Subtype; D007251:Influenza, Human / Q000517:prevention & control* / Q000821:virology; D018571:Sentinel Surveillance