Table 4. Amino acid sites identified to be under positive selection in different viral proteins (VP1-VP4) by different site specific models (p < 0.25).

Method	VP1	VP2	VP3	VP4
SLAC	138 and 148	78	73 and 76	-
FEL	138 and 148	78	73 and 76	-
IFEL	43, 138, 153, 172 and 197	78 and 134	68, 75, 76, 131 and 134	61
MEME	5, 13, 43, 133, 138, 148, 153, 172 and 198	77, 78, 82, 134, 137, 138, 191 and 194	73, 75, 76, 123, 131, 134, 166, 174, 194 and 195	61