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Antigen
Information |
Influenza A
virus subtype H5N1 is a subtype of the Influenza A virus.
Subtype H5N1 is commonly known as avian influenza or bird flu.
H5N1 may cause more than one influenza pandemic as it is
expected to continue mutating in birds. The dominant strain of
HPAI A (H5N1) evolved creating the Z genotype. It has also been
called Asian lineage HPAI/A/H5N1 which is divided into 2
antigenic clades. "Clade 1 includes human and bird isolates from
Vietnam, Thailand, and Cambodia and bird isolates from Laos and
Malaysia. Clade 2 viruses were first identified in bird isolates
from China, Indonesia, Japan, and South Korea before spreading
westward to the Middle East, Europe, and Africa. |