Seroepidemiology of viral hepatitis, HIV and herpes simplex type 2 in the household population aged 21-64 years in Puerto Rico

Table 2 Weighted seroprevalence (%) of selected viral infections among adults 21-64 years: Puerto Rico, 2005-2008

	Weighted prevalence of antibodies		Estimated number of adults infected in Puerto Rico^a
	Prevalence	95% CI	Number	95% CI
HCV (n = 1,650)	2.3	1.3 - 4.2	53000	30000 - 95000
Stratum 1^b	2.1	1.1 - 4.1	9000	5000 - 17000
Stratum 2^c	0.5	0.1 - 2.1	3000	1000 - 10000
Stratum 3^d	2.7	1.6 - 4.8	8000	5000 - 13000
Stratum 4^e	2.7	1.5 - 4.7	30000	17000 - 52000
HBV (n = 1,654)	3.1	2.0 - 4.7	71000	47000 - 108000
Stratum 1^b	5.3	3.6 - 7.8	23000	15000 - 33000
Stratum 2^c	2.6	1.4 - 4.6	12000	7000 - 22000
Stratum 3^d	2.8	1.5 - 5.1	8000	5000 - 14000
Stratum 4^e	2.9	1.7 - 5.0	33000	19000 - 56000
HAV (n = 1,650)	41.3	36.9 - 45.8	933000	834000 - 1035000
Stratum 1^b	42.5	37.9 - 47.3	178000	159000 - 198000
Stratum 2^c	38.5	33.9 - 43.3	180000	158000 - 202000
Stratum 3^d	42.4	37.6 - 47.4	113000	100000 - 126000
Stratum 4^e	42.0	37.2 - 46.8	465000	413000 - 520000
HIV (n = 1,650)	1.1	0.5 - 2.3	25000	12000 - 51000
Stratum 1^b	0.2	0.03 - 1.4	1000	1000 - 6000
Stratum 2^c	0.2	0.03 - 1.6	2000	1000 - 8000
Stratum 3^d	0.7	0.2 - 2.1	2000	1000 - 6000
Stratum 4^e	1.3	0.6 - 3.0	15000	7000 - 34000
HSV-2 (n = 1,446)	22.3	18.5 - 26.7	505000	418000 - 603000
Stratum 1^b	19.7	16.0 - 24.1	83000	67000 - 101000
Stratum 2^c	22.0	18.1 - 26.5	103000	85000 - 124000
Stratum 3^d	24.9	20.5 - 29.8	66000	55000 - 80000
Stratum 4^e	22.1	18.1 - 26.7	246000	201000 - 297000

^aEstimated numbers and their associated 95% CI are rounded to the nearest thousand.
^bStrata 1 include municipalities with low AIDS incidence rates among IDUs and low population density. ^cStrata 2 include municipalities with low AIDS incidence rates among IDUs and high population density. ^dStrata 3 include municipalities with high AIDS incidence rates among IDUs and low population density. ^eStrata 4 include municipalities with high AIDS incidence rates among IDUs and high population density.

ISSN: 1471-2334