Grip tightens on virus outbreaks.
Williams
Nigel
N
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*