Table 2. Prevalence of hepatitis B virus (HBV) infection and carriage among 1,145 elementary school children by residence and vaccination status against hepatitis B.
| HBV infection and vaccination status |
Total (n=1,145) | Urban (n=626) | Rural Soums (n=519) |
||
| Metropolitan | Province centers | Subtotal | |||
| Total HBV infection | |||||
| Complete | 70/422 (16.6) | 5/85 (5.9) | 9/68 (13.2) | 14/153 (9.2) | 56/269 (20.8)** |
| Incomplete | 53/271 (19.6) | 3/37 (8.1) | 9/52 (17.3) | 12/89 (13.5) | 41/182 (22.5) |
| Not vaccinated | 1/9 (11.1) | 0/3 — | 0/2 — | 0/5 — | 1/4 (25.0) |
| Unknown† | 57/443 (12.9) | 32/308 (10.4) | 13/71 (18.3) | 45/379 (11.9) | 12/64 (18.8) |
| Total | 181/1145 (15.8) | 40/433 (9.2) | 31/193 (16.1) | 71/626 (11.3) | 110/519 (21.2)*** |
| HBsAg carriage | |||||
| Complete | 26/422 (6.2) | 1/85 (1.2) | 2/68 (2.9) | 3/153 (2.0) | 23/269 (8.6)** |
| Incomplete | 16/271 (5.9) | 0/37 — | 3/52 (5.8) | 3/89 (3.4) | 13/182 (7.1) |
| Not vaccinated | 0/9 — | 0/3 — | 0/2 — | 0/5 — | 0/4 — |
| Unknown | 17/443 (3.8) | 12/308 (3.9) | 1/71 (1.4) | 13/379 (3.4) | 4/64 (6.3) |
| Total | 59/1145 (5.2) | 13/433 (3.0) | 6/193 (3.1) | 19/626 (3.0) | 40/519 (7.7)*** |
Variables are shown as number and proportion, n (%).
**p<0.01; ***p<0.001 compared to the corresponding values in Urban areas (Subtotal).
† : Vaccination status was considered as “unknown” for those who had no immunization documentations.