Bazi rezvekurima, chikafu nekumaruwa rinorambidza kupinzwa kunze kwehuku mhenyu (huku nemadhadha), huku (kusanganisira shiri dzemusango), mazai ehuku, mazai anodyiwa nehuku kubva kuUnited States kubva musi wa6 Kurume nekuda kwedenda iri. yeyakanyanya pathogenic avian furuwenza H7 muUnited States.

Mushure mekurambidzwa kupinda kunze kwenyika, kutengeswa kwehuku, huku nemazai kunongoitwa kuNew Zealand, Australia neCanada, ukuwo huku ichingotengwa kubva kuBrazil, Chile, Philippines, Australia, Canada neThailand chete.