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HBsAg and anti-HBs prevalence in different study groups
| Study groups | No. cases |
Prevalence (%) |
|
| HBsAg-positive | antiHBs-positive | ||
| Schoolchildren | 410 | 48 (11.8) | 87 (21.2) |
| Students | 666 | 58 (8.7) | 247 (37.2) |
| Military | 500 | 54 (10.6) | 124 (24.7) |
| Casual blood donors | 1286 | 115 (8.9) | 293 (22.8) |
| Voluntary blood donors | 378 | 36 (9.6) | 112 (29.7) |
| Pregnant women | 640 | 47 (7.3) | 232 (36.3) |
| Total | 3880 | 358 (9.5) | 1095 (28.7) |
