TABLE 1.

Characteristics of subjects^a

Patient ID	Age (yr)	Sex	Race	Duration of HAM	Western blot assay resultb	Anti-HTLV-1 antibody titerc		No. of HTLV-1 DNA copies/100 PBMCsd
						Serum	CSF
TAD	35	F	AC	3 yr	HTLV-1	131,072	NA	2.2
TAF	47	M	Cauc	11 yr	HTLV-1	262,144	NA	1.6
TAK	53	F	AC	13 yr	HTLV-1	32,768	NA	7.7
TAL	60	F	AC	15 yr	HTLV-1	262,144	NA	1.4
TAN	39	F	Cauc	7 mo	HTLV-1	16,384	1,024	14

^aAbbreviations: ID, identifier; F, female; M, male; AC, Afro-Caribbean; Cauc, Caucasian; CSF, cerebrospinal fluid; NA, not available. 

^bThe assay used was Genelabs HTLV-I/II 2.3 (Genelabs, Singapore, Singapore). 

^cThe assay used was the Serodia HTLV-1 gel particle agglutination assay (Fujirebio, Tokyo, Japan). 

^dMedian number of HTLV-1 viral DNA copies prior to any antiviral treatment.