High prevalence of chronic viral hepatitis B and C in Minnesota Somalis contributes to rising hepatocellular carcinoma incidence

Table 2 Frequency of hepatitis B virus- and hepatitis C virus-positive test results in Community Recruited Minnesota Somali Residents

Age group (yr)	Chronic HBV infection		Previous HBV exposure including spontaneous clearance		Chronic HCV infection
	HBsAg-positive/total males, n	HBsAg-positive/total females, n	HBcAb-positive/total males, n	HBcAb-positive/total females, n	Anti-HCV-positive/total males, n	Anti-HCV-positive/total females, n
≤ 20	0/8 (0)	0/9	1/8	2/9	0/8	0/9
21-30	10/89	6/74	29/89	12/74	3/89	0/74
31-40	20/92	12/92	24/92	29/92	3/92	2/92
41-50	12/72	5/82	32/72	27/82	5/72	1/82
51-60	12/50	10/64	23/50	24/64	3/50	3/64
61-70	6/35	11/40	20/35	16/40	5/35	10/40
> 70	6/43	10/29	20/43	12/29	17/43	7/29
Total	66/389	54/390	149/389	122/390	36/389	23/390
Age-adjusted frequency (per 1000 population)	125	116	323	297	67	57

HBcAb: Hepatitis B core antibody; HBsAg: Hepatitis B surface antigen; HBV: Hepatitis B virus; HCV: Hepatitis C virus.