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Table 4 HA-subtype distribution of the 26,133 NA sequences

From: Diversity and distribution of type A influenza viruses: an updated panorama analysis based on protein sequences

Subtype H1 H2 H3 H4 H5 H6 H7 H8 H9 H10 H11 H12 H13 H14 H15 H16 H17 H18 Total
N1 6921 26 65 8 1715 263 101 1 16 19 19 4        9158
N2 1839 122 7022 89 478 400 143 2 1299 14 71 18 9 1      11,507
N3 39 139 21 22 95 6 297 1 4 78 32 4 2 5   73    818
N4 9 3 2 22 4 11 42 148 2 54   8   1 1     307
N5 11 22 23 17 44 61 4 1 12 25 4 147   2      373
N6 15 5 147 697 121 197 27 1 4 22 10 4 61 4      1315
N7 5 14 4 9 7 3 229 1 6 279 2 3   2      564
N8 19 10 902 147 90 150 20 2 5 51 10 15 12 2 1     1436
N9 20 34 7 11 18 10 253   6 12 258 3 14   4     650
N10                  3   3
N11                   2 2
Total 8878 375 8193 1022 2572 1101 1116 157 1354 554 406 206 98 17 6 73 3 2 26,133