Table 2.

Amino acid and nucleotide substitutions in the hemagglutinin gene (HA1 subunit) of eight equine influenza viruses isolated from an outbreak in São Paulo, SP, Brazil, 2015.

Genetic variant	EIV	Residue 121	Codon	Residue 304	Codon
V1	8/2015	T	ACA	K	AAA
V2	10/2015	T	ACA	E	GAA
V2	11/2015	T	ACA	E	GAA
V3	12/2015	S	TCA	K	AAA
V3	15/2015	S	TCA	K	AAA
V3	25/2015	S	TCA	K	AAA
V1	30/2015	T	ACA	K	AAA
V3	32/2015	S	TCA	K	AAA