From: Positive selection on hemagglutinin and neuraminidase genes of H1N1 influenza viruses
Dataset | Description | Number of sequences | Length of alignment (bp) | Number of sites under positive selection | Positively selected sites1 | ||||
---|---|---|---|---|---|---|---|---|---|
 |  |  |  |  |  | HA1 | HA2 | ||
 |  |  |  | SLAC | FEL | SLAC | FEL | SLAC | FEL |
1.1 | Avian strains | 75 | 1647 | 0 | 0 | Â | Â | Â | Â |
1.2 | North American swine strains | 196 | 1647 | 0 | 1 | Â | 138 | Â | Â |
1.3 | Eurasian swine strains | 90 | 1647 | 0 | 1 | Â | Â | Â | 399 |
1.4 | Seasonal human strains | 1404 | 1647 | 8 | 8 | 82B,94B, 141B,162BG,186B,187BR,222BR | 82B,94B,160BG,162BG,186B,187BR,222BR | 451T | 451T |
1.5 | Pandemic 2009 human strains | 1891 | 1647 | 7 | 9 | 186B,197,203,205B,222BR,223B,261BT | 186B,197,203,222BR,261BT | Â | 411T,451T,460T,530T |