TABLE 1.

Summary of VLPT sequence variation

Sample	Geographic origin	No. of repeat units	Repeat profile	A or G at position −69	A or G at position 6	A or G at position 27	A or G at position 487	Aspartic acid deletion	Presence of nine-base gap	No. of repeats in 120-kDa antigen genea
Arkansas isolate	Arkansas	4	1, 2, 3, 4	A	A	G	G	No	No	4
91HE17 isolate	Arkansas	5	1, 2, 3, 3, 4	A	A	G	G	No	No	4
Sapulpa isolate	Oklahoma	3	1, 2, 4	A	A	G	G	No	No	3
Jax isolate	Florida	4	1, 2, 3, 4	A	A	G	G	No	No	4
St. Vincent isolate	Georgiab	3	1, 2, 4	A	A	G	G	No	No	3
Osceola isolate	Florida	4	1, 2, 3, 4	A	A	G	G	No	No	3
Wakulla isolate	Florida	6	1, 2, 3, 3, 4, 5	G	G	A	A	Yes	Yes	4
Liberty isolate	Florida	4	1, 2, 3, 4	G	G	G	G	No	No	4
West Paces isolate	Tennessee	3	1, 2, 4	A	A	G	G	No	No	3
Patient 1 blood	Arkansas	5	1, 2, 3, 4, 5	G	G	A	A	Yes	Yes	NDc
Patient 2 blood	Texas	5	1, 2, 3, 3, 4	A	A	G	G	No	No	ND
Patient 3 blood	Florida	5	1, 2, 3, 4, 5	G	G	A	A	Yes	Yes	ND
Patient 4 blood	Delaware	5	1, 2, 6, 4, 5	G	G	A	A	Yes	Yes	ND
Patient 5 blood	Maryland	4	1, 2, 3, 4	A	A	G	G	No	No	ND
Patient 6 blood	Florida	4	1, 2, 3, 4	A	A	G	G	No	No	ND
Patient 7 blood	Maryland	5	1, 2, 3, 4, 5	G	G	A	A	Yes	Yes	ND
Tick 97-36	Florida	4	1, 2, 3, 4	ND	A	G	ND	No	ND	ND
Tick pool 9	Missouri	5	1, 2, 3, 4, 5	G	G	A	G	Yes	No	4
Tick pool 20	North Carolina	4	1, 2, 3, 4	G	A	G	A	No	No	3
Tick pool 25	Kentucky	5	1, 2, 3, 3, 4	A	A	G	G	No	No	4
Tick pool 85	North Carolina	4	1, 2, 3, 4	G	A	G	A	No	Yes	3
Tick pool 95	North Carolina	3	1, 2, 4	A	A	G	A	No	Yes	3
Tick pool 97	North Carolina	4	1, 2, 3, 4	A	A	G	G	No	No	3
Tick pool 130	North Carolina	4	1, 2, 3, 7	A	G	A	A	Yes	No	4

^aThe 120-kDa antigen gene PCR results for tick pools were taken from Yu et al. (30). 

^bFlorida patient with history of tick exposure in Georgia. 

^cND, not done.