Specially for H9N2 and H5N8.
There are nine known subtypes of A(H9) viruses; A(H9N1), A(H9N2), A(H9N3), A(H9N4), A(H9N5), A(H9N6), A(H9N7), A(H9N8), and A(H9N9)]; all A(H9) viruses identified worldwide in wild birds and poultry are LPAI viruses. A(H9N2) virus has been detected in bird populations in Asia, Europe, the Middle East and Africa. Sporadic avian influenza A(H9N2) virus infections have been reported in people with mild upper respiratory tract illness, although some infections have resulted in death.
H5N8 is a subtype of the influenza A virus (sometimes called bird flu) and is highly lethal to wild birds and poultry.