Table 2. Comparisons of 1,100 nucleotide sequences of the horse virus isolate, Vaccine A virus strain, and selected GenBank isolates of the structural unit E1.

GenBank accession no.	Strain/isolate	Mutations	% Match
Horse		0	100
Vaccine		5	99.5
AF159551	LA50	7	99.4
L37662	PE6 vaccine	11	98.9
U01552	Decuir	13	98.5
U01558	Tenbroeck	15	98.6
U01554	NJ/60	15	98.6
AF159556	FL96-14834	17	98.5
X63135	ssp. N. Am. Variant	18	98.4
AF159550	MA38-Mass	19	98.3
U01555	ME771332	19	98.2
U01034	82V2137	19	98.3