Genetic Analysis of Avian Influenza Viruses: Cocirculation of Avian Influenza Viruses with Allele A and B Nonstructural Gene in Northern Pintail (Anas acuta) Ducks Wintering in Japan

Table 3

Percentage identity (%) of nucleotide sequences of the NA genes of avian influenza viruses: intrahomology and interhomology with interrelated sequences from GenBank.

Virus	Identity^a (%)	Highest identity^b (%)
Subtype N1
A/pintail/Aomori/422/07 H1N1	96.8–99.8	A/duck/Tsukuba/67/05 H1N1 (98.8)
A/pintail/Aomori/794/08 H1N1		A/duck/Mongolia/116/02 H1N1 (>98.6)
A/pintail/Miyagi/1472/08 H1N1
Subtype N2
A/pintail/Akita/1265/08 H1N2	99.7–99.9	A/goose/Gui Yang/3799/05 H5N2 (>98.2)
A/pintail/Akita/1353/08 H1N2
A/pintail/Akita/1364/08 H1N2
Subtype N3
A/pintail/Aomori/1130/08 H1N3		A/duck/Niigata/514/06 H5N3 (99.6)

^aNucleotide sequence identity within each gene segment of our isolates; ^bidentity with genes of viruses from GenBank.