a virus subtype h5n9 influenza a virus subtype h6n1 influenza a virus subtype h6n2 influenza a virus subtype h7n1 influenza a virus subtype h7n2 influenza a virus subtype h7n3 influenza a virus subtype h7n4 influenza a virus subtype h7n7 influenza a virus subtype h7n9 influenza a virus subtype h9n2 influenza a virus subtype h10n3 influenza a virus subtype h10n7 influenza a virus subtype h10n8 influenza a virus subtype h11n2 influenza a virus subtype h11n9 influenza a virus subtype h17n10 influenza a virus subtype h18n11