Table 2.

Alphavirus test isolates and their expected/observed base compositions.^ab

Virus	Strain	Sequence available	Expected base composition	Observed base composition
VEE	3908 (subtype IC, 1995)	Yes	[21 23 23 19]	[21 23 23 19]
VEE	66637 (subtype ID, 1981)	Yes	[21 23 23 19]	[21 23 23 19]
VEE	68U201 (subtype IE, 1968)	Yes	[22 25 19 20]	[22 25 19 20]
VEE	243937 (subtype IC, 1992)	Yes	[21 23 23 19]	[21 23 23 19]
WEE	OR71 (71V1658)	Yes	[22 26 19 19]	[22 26 19 19]
WEE	SD83 (R‐43738)	No	Unknown	[22 26 19 19]
WEE	ON41 (McMillan)	No	Unknown	[22 27 18 19]
WEE	Fleming (Fleming)	No	Unknown	[22 25 19 20]
EEE	(Parker strain)	Yes	[23 25 19 19]	[23 25 19 19]

  ^aThree of the WEE isolates shown in grey represent de novo measurements.

  ^bAll isolates were obtained from Dr. Scott Weaver, UTHSC, Galveston, TX.