Eleven-Year Distribution Pattern of Hepatitis C Virus in Southern Italy

Table 3

HCV genotype/subtype prevalence among different age groups (years) in total 2,153 HCV RNA-positive patients, stratified in two time periods (2001–2005; 2006–2011).

Number of patients (%)
	≤25		26–35		36–45		46–55		56–65		>65		Total of age groups
Genotypes/subtypes	2001/05	2006/11	2001/05	2006/11	2001/05	2006/11	2001/05	2006/11	2001/05	2006/11	2001/05	2006/11	2001/05	2006/11
1b	7 (1.1)	9 (2.2)	34 (5.3)	17 (4.1)	35 (5.4)	36 (8.7)	94 (14.5)	48 (11.7)	234 (36.2)	103 (25.0)	243 (37.5)	199 (48.3)	647	412
2a/2c	6 (2.3)	5 (2.2)	7 (2.7)	12 (5.4)	23 (8.9)	8 (3.6)	25 (9.7)	28 (12.5)	82 (31.8)	46 (20.5)	115 (44.6)	125 (55.8)	258	224
3	13 (16.7)	3 (3.7)	23 (29.5)	21 (25.6)	32 (41.0)	35 (42.7)	8 (10.2)	19 (23.2)	1 (1.3)	2 (2.4)	1 (1.3)	2 (2.4)	78	82
4	1 (1.3)	1 (1.7)	8 (10.5)	3 (5.2)	14 (18.4)	16 (27.6)	18 (23.7)	15 (25.9)	24 (31.6)	9 (15.5)	11 (14.5)	14 (24.1)	76	58
1a	1 (3.4)	3 (4.9)	6 (20.7)	11 (18.0)	12 (41.5)	20 (32.8)	5 (17.2)	17 (27.9)	1 (3.4)	6 (9.8)	4 (13.8)	4 (6.6)	29	61
1^*			6 (14.6)	4 (8.2)	11 (26.8)	9 (18.4)	9 (22.0)	6 (12.2)	5 (12.2)	13 (26.5)	10 (24.4)	17 (34.7)	41	49
1a/1b	2 (3.2)		9 (14.5)		23 (37.1)	3 (37.5)	7 (11.3)	3 (37.5)	10 (16.2)	1 (12.5)	11 (17.7)	1 (12.5)	62	8
2^*		1 (2.4)			1 (4.2)	3 (7.3)	6 (25.0)	6 (14.6)	4 (16.6)	8 (19.5)	13 (54.2)	23 (56.2)	24	41
5											2 (100.0)	1 (100.0)	2	1
Total (%)	30 (2.5)	22 (2.4)	93 (7.6)	68 (7.3)	151 (12.4)	130 (13.9)	172 (14.1)	142 (15.2)	361 (29.7)	188 (20.0)	410 (33.7)	386 (41.2)	1217	936

^∗Unsubtypeable.