Table 1.
Hepatitis B and C virus markers among children and adolescents attending six institutions in Rio de Janeiro State (n = 1,217).
| Number tested | HBsAg− anti-HBc+ anti-HBs+ |
HBsAg− anti-HBc+ anti-HBs− |
HBsAg− anti-HBc− anti-HBs+ |
HBsAg+ anti-HBc− anti-HBs− |
HBsAg+ anti-HBc+ anti-HBs− |
HBsAg− anti-HBc− anti-HBs− |
anti-HCV+ HCV RNA+ |
|
|---|---|---|---|---|---|---|---|---|
| Total population studied | 1217 (100%) | 15 (1.2%) | 29 (2.4%) | 293 (24.1%) | 18 (1.5%) | 4 (0.3%) | 855 (70.3%) | 3 (0.2%) |
| Sex | ||||||||
| Female | 628 (51.6%) | 7 (46.7%) | 16 (55.2%) | 161 (54.9%) | 6 (33.3%) | 2 (50%) | 434 (50.8%) | 1 (33.3%) |
| Male | 589 (48.4%) | 8 (53.3%) | 13 (44.8%) | 132 (45.1%) | 12 (66.6%) | 2 (50%) | 421 (49.2%) | 2 (66.6%) |
| Age group (years) | ||||||||
| 0–2 | 36 (2.9%) | 1 (6.7%) | 0 (0%) | 24 (8.2%) | 1 (5.5%) | 1 (25%) | 9 (1.0%) | 0 (0.0%) |
| 3–6 | 221 (18.2%) | 1 (6.7%) | 3 (10.3%) | 87 (29.7%) | 2 (11.1%) | 1 (25%) | 126 (14.7%) | 0 (0.0%) |
| 7–11 | 369 (30.3%) | 7 (46.6%) | 8 (27.6%) | 53 (18.1%) | 8 (44.4%) | 1 (25%) | 290 (33.9%) | 2 (66.6%) |
| 12–15 | 513 (42.2%) | 6 (40%) | 18 (62.1%) | 97 (33.1%) | 7 (38.9%) | 1 (25%) | 384 (44.9%) | 0 (0.0%) |
| 16–18 | 78 (6.4%) | 0 (0.0%) | 0 (0.0%) | 32 (10.9%) | 0 (0.0%) | 0 (0.0%) | 46 (5.4%) | 1 (33.3%) |
| Period of HBV vaccination available at public health units∗ | ||||||||
| Group 1 | 885 (72.7%) | 11 (73.3%) | 28 (96.5%) | 44 (15.0%) | 18 (100.0%) | 2 (50.0%) | 782 (91.5%) | 3 (100.0%) |
| Group 2 | 332 (27.3%) | 4 (26.7%) | 1 (3.5%) | 249 (85.0%) | 0 (0.0%) | 2 (50.0%) | 73 (8.5%) | 0 (0.0%) |
*HBV vaccination available at public health units before 2001 (Group 1) and HBV vaccination available at public health units as of 2001 (Group 2).