Strain Subtype Gene Forward Primer Reverse Primer Amplicon Length
PekingDuck/Singapore/645/97 H5N3 HA5 CAGATTTGCATTGGTTACCATGC GATTTCACRTATTTGGGGCATTC 920
    NA3 AGCAAAAGCAGGTGCGAG3 CGATCCAGGTTCATTGTC 1385
Ck/PA/13609/93 H5N2 M AGCAAAAGCAGG1 GACGATCAAGAATCCACAATA 849
    HA5 TCTGCATTGGTTATCATGC TATTGCTCCAAATAGGCCTC 990
    NA2 ATGAATCCAAATCAGAAGATAATAAC CCATCAGGCCATGAGCCTG 1310
Ck/Puebla/8624-602/94 H5N2 HA5 AGCCAAAAGCAGGGGT3 AGTAGAAACAAGGGTG2 995
    NA2 ATGAATCCAAATCAGAAGATAATAAC CCATCAGGCCATGAGCCTG 1323
Tk/WI/68 H5N8 HA5 GGTTATCATGCAAACAATTC TATTGCTCCAAACAGACCTC 982
Ck/DE/HOBO/03 H7N2 M AGCAAAAGCAGG1 GACGATCAAGAATCCACAATA 848
Ck/NY/13142-5/94 H7N2 HA7 AGCCAAAAGCAGGGGA3 AGTAGAAACAAGGGTG2 1726
Tk/OR/71 H7N3 HA7 AGCCAAAAGCAGGGGA3 AGTAGAAACAAGGGTG2 1726
    NA3 AGCAAAAGCAGGTGCGAG3 CGATCCAGGTTCATTGTC 1383
Ck/Korea/96006/96 H9N2 M AGCAAAAGCAGG1 GACGATCAAGAATCCACAATA 849
    HA9 AGCCAAAAGCAGGGGA/T3 AGTAGAAACAAGGGTG2 1727
    NA2 ATGAATCCAAATCAGAAGATAATAAC CCATCAGGCCATGAGCCTG 1382
1Uni3’ (AGCAAAAGCAGG), [10]
2Derivative of Uni5’ (AGTAGAAACAAG), [10]
3Extended derivative of Uni3’
Table 1: Primers used for the amplification of avian influenza genes (HA, NA, and M).