Table 3.
Number of children, adolescents and adults according to the combination of results for the detection of serologic markers for HB infection and interpretation of results
| Serologic markers | Children(6 mos- < 5 yrs) | Adolescents(16–20 yrs) | Adults(21–49 yrs) | Adolescents + Adults(16–49 yrs) | ||||
|---|---|---|---|---|---|---|---|---|
| Combination | HBsAg | anti-HBc | anti-HBs | Interpretation [1,2] | ||||
| 1 | - | - | - | 8* | 94 | 232 | 326 | susceptible, never infected |
| 2 | + | - | - | 0 | 4 | 4 | 8 | early acute infection |
| 3 | + | + | - | 0 | 3 | 6 | 9 | acute or chronic infection |
| 4 | - | + | - | 0 | 1 | 21 | 22 | past infection or false positive (i.e. susceptible), or “low level” chronic infection |
| 5 | - | + | + | 0 | 7 | 46 | 53 | Past infection; recovered and immune |
| 6 | + | - | + | 0 | 0 | 0 | 0 | ------- |
| 7 | - | - | + | 424 | 15 | 59 | 74 | Immune due to hepatitis B vaccine |
| 8 | + | + | + | 0 | 0 | 2 | 2 | Acute or chronic infection |
| Total | 432 | 124 | 370 | 494 | ||||
*Received complete series of immunization.