Table 1: Amino acid differences among the hemagglutinin protein of equine and canine influenza viruses. The five amino acids previously identified as EIV H3N8 mutations are in bold.

VirusHA amino acid position
29 92118119 261 479

A/Eq/KY/1/1981INNSLEWRIGN
A/Eq/WI/1/03INNSLEWKIGN
A/Eq/CO/10/07INNSLEWKIGN
A/Ca/FL/242/03IKSSLELKTGT
A/Ca/FL/43/04MKSNLELKTGT
A/Ca/CO/224986/06MKSNVELNTET
A/Ca/CO/2025974/07MKSNVKLNTET
A/Ca/WY/86033/07MKSNVKLNTET