title: H5N1 avian influenza virus reaches Europe.
mesh_terms: D000818:Animals; D001717:Birds; D004196:Disease Outbreaks; D005060:Europe / Q000453:epidemiology; D053124:Influenza A Virus, H5N1 Subtype; D005585:Influenza in Birds / Q000453:epidemiology* / Q000517:prevention & control*