title: Risk of HPAI introduction from USA currently negligible, says Defra.
mesh_terms: D025041:Animal Migration; D000818:Animals; D000835:Animals, Wild; D001717:Birds; D003132:Commerce / Q000331:legislation & jurisprudence; D018563:Disease Notification; D004196:Disease Outbreaks / Q000517:prevention & control / Q000662:veterinary*; D053124:Influenza A Virus, H5N1 Subtype / Q000472:pathogenicity; D053125:Influenza A Virus, H5N2 Subtype / Q000472:pathogenicity; D005585:Influenza in Birds / Q000453:epidemiology* / Q000635:transmission*; D011200:Poultry; D018570:Risk Assessment; D006113:United Kingdom / Q000453:epidemiology; D014481:United States / Q000453:epidemiology