We report reoccurrence of highly pathogenic avian influenza A(H5N2) virus clade 2.3.4.4 in a wild mallard in Alaska, USA, in August 2016. Identification of this virus in a migratory species confirms low-frequency persistence in North America and the potential for re-dissemination of the virus during the 2016 fall migration.
Keywords: Alaska; H5N2 subtype; North America; United States; clade 2.3.4.4; highly pathogenic avian influenza virus; influenza; influenza A(H5N2) virus; phylogenetic analysis; viruses; waterfowl; wild birds; zoonoses.