Defra revises notifiable avian disease strategy.
D000818:Animals; D001717:Birds; D004196:Disease Outbreaks / Q000517:prevention & control / Q000662:veterinary*; D006077:Government Agencies; D006801:Humans; D005585:Influenza in Birds / Q000517:prevention & control*; D009521:Newcastle Disease / Q000517:prevention & control*; D006113:United Kingdom / Q000453:epidemiology