TABLE 1.

Summary of pairwise nucleotide and amino acid sequence comparisons among E30 isolates^a

Group	Sequence differences within and among the indicated groups
	Nucleotide				Amino acid
	1	2	3	4	1	2	3	4
1	0.1–20.6	21.6–25.1	21.6–24.8	21.5–26.4	0.3–6.9	6.9–12.7	7.2–11.3	7.2–13.0
2		0.2–12.3	7.1–13.5	10.1–16.0		0.0–6.2	3.1–6.5	3.8–7.9
3			0.6–7.9	6.2–12.0			1.0–2.8	1.4–5.1
4				0.1–10.8				0.0–6.9

^aThe data indicate the range of sequence differences (percent) within and among the four E30 genetic groups.