TABLE 1.

HCV antibody prevalence by risk population

Population	Specimen collection dates (mo/yr)	Median age (yr)	n	Seroprevalence (% anti-HCV positive)
Blood donors	1/00-12/05		4,620,687	0.1
VA patients	7/98-3/99	58	1,032	18
Young IDU	1/00-9/06	22	1,095	40a
Older IDU
≥10 yr of injecting	1998-2000	45	1,210	92
<10 yr of injecting	1998-2000	35	391	82
Total			1,601	89

^aOf 1,095 persons tested, 146 were anti-HCV positive by EIA 3 and 289 were anti-HCV positive by EIA 2 (435/1,095 = 40%).