Table 1

Anti-hepatitis C virus (HCV) positivity and HCV genotype distribution according to age, as well as overall prevalence (%) of the different HCV genotypes in the general population (n=6917) and the age distribution in the population of reference (total Dionysos cohort)

HCV genotype12–25 years26–35 years36–45 years46–55 years56–65 yearsTotal ⩽45 yearsTotal >45 yearsOverall
Total Dionysos population1464 (21.2)1347 (19.5)1354 (19.6)1368 (19.8)1384 (20.0)4165 (60.2)2752 (39.8)6917
Anti-HCV positive9 (4.0)20 (8.8)26 (11.5)56 (24.8)115 (50.9)55 (24.3)171 (75.7)1-150 226 (3.2)
HCV-RNA positive5 (3.1)14 (8.6)12 (7.4)43 (26.5)88 (54.3)31 (19.1)131 (80.9)1-150 162 (2.3)
Type 1a 0 (0.0)2 (28.6)1 (14.3)2 (28.6)2 (28.6)3 (42.9)4 (57.1)7 (0.1)
Type 1b1 (1.5)5 (7.4)5 (7.4)23 (33.8)34 (50.0)11 (16.2)57 (83.8)1-150 68 (1.0)
Type 2a1 (2.6)1 (2.6)4 (10.3)12 (30.8)21 (53.8)6 (15.4)33 (84.6)1-150 39 (0.6)
Type 2b0 (0.0)0 (0.0)0 (0.0)0 (0.0)1 (100)0 (0.0)1 (100)1 (0.01)
Type 2c0 (0.0)0 (0.0)0 (0.0)2 (50.0)2 (50.0)0 (0.0)4 (100)4 (0.06)
Type 3a0 (0.0)2 (66.7)0 (0.0)0 (0.0)1 (33.3)2 (66.7)1 (33.3)3 (0.04)
Co20 (0.0)0 (0.0)0 (0.0)0 (0.0)3 (100)0 (0.0)3 (100)3 (0.04)
Co3 0 (0.0)3 (27.3)1 (9.1)1 (9.1)6 (54.5)4 (36.4)7 (63.6)11 (0.16)
UT3 (11.5)1 (3.8)1 (3.8)3 (11.5)18 (69.2) 5 (19.2)21 (80.8)1-150 26 (0.38)
  • Values in parentheses are percentages.

  • Co2, coinfections by two HCV genotypes (two patients infected by genotypes 1b and 2b and one by genotype 1b and 2 a); Co3, coinfections by three HCV genotypes (five of the 11 patients infected by genotypes 1a, 1 b and 2a and the other six by genotypes 1b, 2a and 2b); UT, untypable genotypes.

  • 1-150 p<0.002 v total⩽ 45; p<0.01v all the other age ranges.