Comparison of the Infectivity and Transmission of Contemporary Canine and Equine H3N8 Influenza Viruses in Dogs

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.

Virus	HA amino acid position
	29	𝟓𝟒	𝟖𝟑	92	118	119	𝟐𝟐𝟐	261	𝟑𝟐𝟖	479	𝟒𝟖𝟑
A/Eq/KY/1/1981	I	N	N	S	L	E	W	R	I	G	N
A/Eq/WI/1/03	I	N	N	S	L	E	W	K	I	G	N
A/Eq/CO/10/07	I	N	N	S	L	E	W	K	I	G	N
A/Ca/FL/242/03	I	K	S	S	L	E	L	K	T	G	T
A/Ca/FL/43/04	M	K	S	N	L	E	L	K	T	G	T
A/Ca/CO/224986/06	M	K	S	N	V	E	L	N	T	E	T
A/Ca/CO/2025974/07	M	K	S	N	V	K	L	N	T	E	T
A/Ca/WY/86033/07	M	K	S	N	V	K	L	N	T	E	T