Table 1. Frequency of positive HTLV-1/HTLV-2 tests in relatives of HTLV carriers from Belém.

Relatives	Subjects studied N (%)	Seropositive N (%)	95% CI	P-value*
Gender			0.95 to 3.81	0.0932
female	154 (67.8)	45 (29.2)
male	73 (32.2)	13 (17.8)
Age			0.06 to 0.34	<0.0001
<30 years	88 (38.8)	7 (8.0)
≥30 years	139 (61.2)	51 (36.7)
HTLV genotype			0.48 to 1.79	0.9602
HTLV-1	163 (71.8)	41 (25.2)
HTLV-2	64 (28.2)	17 (26.6)
Index cases			0.68 to 2.26	0.5907
symptomatic	93 (41.0)	26 (28.0)
asymptomatic	134 (59.0)	32 (23.9)

Source: Tropical Medicine Center, Belém.

^*Chi-square test.