Table 1. Distribution of genotype 1 subtypes/clusters in different continents.

Location	No. of subtypes/unclassified lineages	Name of subtypes/unclassified lineages*	No. of isolates (n = 347)	Percentage of isolates
Africa	6*	1c, 1d, 1e, 1g, 1h, 1l	109	36.6
	11† (unclassified)	4, 6, 7, 9, 11, 12, 14, 16, 17, 18, 19	18
Asia	2*	1c, 1e	101	36.6
	1† (unclassified)	21	26
Eastern Mediterranean	1*	1g§	2	0.58
Europe	6*	1c, 1d, 1f, 1g, 1h, 1i	16	5.76
	4† (unclassified)	8||, 9, 11, 13||	4
North America	11*	1c, 1d, 1e||, 1g||, 1h||, 1i||, 1j#, 1k, 1l, 1m#, 1n#	42	15.56
	11† (unclassified)	1#, 2, 3, 4, 5, 7||, 9||, 14, 15||, 18, 20	12
South America	1*	1g	1	0.29
Country unknown	1*	1l	2	0.58
Country unknown	Incomparable‡	Core or E2 regions	14	4.03
Total (n = 347)	11*	1c–1n	273	78.68
	21† (unclassified)	1–21	60	17.29
	Incomparable‡		14	4.03

^*Subtypes 1a and 1b are excluded because they are distributed globally and therefore 10 assigned subtypes remain.

^†Sixty sequences could not be grouped into subtypes 1a–1n, based on which 21 unclassified lineages are numbered temporarily.

^‡Incomparable.

^§From Lebanon.

||Origin in Africa (Murphy et al., 2007) or GenBank accession number AJ851228.

^#Origin in Haiti (Murphy et al., 2007).