Bird flu fears widen.
Williams
Nigel
N
D000349:Africa / Q000453:epidemiology; D000818:Animals; D001210:Asia, Southeastern / Q000453:epidemiology; D001717:Birds; D004196:Disease Outbreaks / Q000662:veterinary*; D005239:Fear; D053124:Influenza A Virus, H5N1 Subtype; D005585:Influenza in Birds / Q000453:epidemiology* / Q000635:transmission / Q000821:virology; D011202:Poultry Products / Q000191:economics / Q000821:virology; D006113:United Kingdom / Q000453:epidemiology