HTLV-1 in rural Guinea-Bissau: prevalence, incidence and a continued association with HIV between 1990 and 2007

Retrovirology

Table 2 HTLV-1 incidence by HIV status and HIV incidence by HTLV-1 status in Caió between 1990 and 2007^a

	IR (Cases/PYO) of HTLV-1 per 1000 PYO	IR (Cases/PYO) of HIV per 1000 PYO^b	IRR (95% CI) Crude	P value	IRR (95% CI) Adjusted^c	P value
HIV status
HIV negative	1.6 (29/18,607)	-	1		1
HIV positive ^d	4.6 (6/1,303)	-	2.6 (1.1-6.3)	0.03	2.5 (1.0-6.2)	0.07
HTLV-1 status
HTLV-1 negative	-	7.7 (141/18,252)	1		1
HTLV-1 positive	-	9.7 (6/621)	1.2 (0.5-2.7)	0.7	1.2 (0.5-2.7)	0.7

PYO person-years of observation; IR Incidence Rate; IRR Incidence Rate Ratio; CI Confidence Interval
^adata from all subjects that were seen at least twice during the serosurveys and/or case-control studies (see Methods)
^bsubjects that went from single to dually HIV infected were excluded
^cadjusted for sex and age
^dincludes subjects that are HIV-1, HIV-2 or HIV-1/2 dually positive

ISSN: 1742-4690