Table 2. Prevalence of positivity for HTLV in indigenous populations of Brazil.

State	Tribe/Nation	Author *	N	HTLV-1 (%)		HTLV-2 (%)
Amazonas	Yamamadi	Ishak et al. 199569	36			2	5.6
Amapá	Galibi	Ishak et al. 199569	148	1	0.67	3	2.0
	Wayampi	Ishak et al. 199569	71			1	1.4
		Shindo et al. 2002119	321	2	0.62
Pará	Kayapo	Maloney et al. 199291	264			88	33.3
		Black et al. 199414	703				28.0
		Ishak et al. 199569	207	1	0.48	67	32.2
		Fujiyoshi et al. 199951	19			11	57.9
		Vallinoto et al. 2002126	27			6	22.2
	Kayapo **	Novoa et al. 1997102	141			59	41.8
	Tiriyo	Nakauchi et al. 1992100	55	2	3.6
		Ishak et al. 199569	26			4	15.4
		Vallinoto et al. 2002126	150			3	2.0
		Shindo et al. 2002119	683			3	0.44
	Xicrin	Nakauchi et al. 1992100	72	10	13.9
		Gabbai et al. 199352	206			31	15.0
	Mekranoiti	Nakauchi et al. 1992100	82	10	12.2
	Parakanã	Gabbai et al. 199352	89			2	2.25
		Ishak et al. 199569	52			1	1.92
	Arara Laranjal	Ishak et al. 199569	44			5	11.4
	Munduruku	Ishak et al. 199569	161			13	8.1
	Wayana-Apalaí	Ishak et al. 199569	50			1	2.0
Roraima	Yanomami	Ishak et al. 199569	102	3	2.94	4	3.9
Rondônia	Karitiana	Ishak et al. 199569	50			2	4.0
	Cinta-Larga	Ishak et al. 199569	50			1	2.0
Tocantins	Kraho	Maloney et al. 199291	172			21	12.2
Paraná	Guarani	Menna-Barreto et al. 200593	52			3	5.8

^*Numbering as given in the references.

^**Children born to HTLV-2-positive mothers.