title: Grip tightens on virus outbreaks.
authors.forename: Nigel
authors.initials: N
authors.lastname: Williams
mesh_terms: D000818:Animals; D001717:Birds; D002681:China / Q000453:epidemiology; D018563:Disease Notification / Q000331:legislation & jurisprudence*; D053124:Influenza A Virus, H5N1 Subtype; D005585:Influenza in Birds / Q000453:epidemiology*