Table 2. Genetic diversity of lymphocytic choriomeningitis virus strains*.

Diversity	RNA, nt			Proteins, aa
	L	S		Z	L	GPC	N
Overall	22	19		18	13	10	6
Within lineage I	19	15		15	11	6	4
Within lineage II	25	15		34	18	7	3
Within lineage III†	NA	NA		NA	NA	NA	NA
Within lineage IV‡	NA	18		NA	NA	13	5
Between lineages I and II	27	22		27	19	11	6
Between lineages I and III	28	23		19	19	11	8
Between lineages I and IV	NA	24		NA	NA	19	9
Between lineages II and III	27	22		28	19	11	6
Between lineages II and IV	NA	24		NA	NA	18	10
Between lineages III and IV	NA	25		NA	NA	19	11

*nt, nucleotide; aa, amino acid; GPC, glycoprotein precursor; NA, not applicable. Pairwise genetic distances (uncorrected p values) were measured eliminating all positions containing alignment gaps and missing data.
†Only 1 sequence in lineage III.
‡No available L sequence in lineage IV.