Table 6.
Comparison of test results of hepatitis B markers surveyed in 1998, 2008 and 2009
| Immunized children | Unimmunized adult | |||
|---|---|---|---|---|
| 1998 a | 2008 | 1998 b | 2009 c | |
| HBsAg positive | 2/285 (0.7%) | 0/432 (0.0%) | 19/290 (6.6%) | 12/370 (3.2%) |
| anti-HBs positive | 217/282 (77.0%) | 424/432 (98.1%) | 168/290 (57.9%) | 107/370 (28.9%) |
| anti-HBc positive | 15/281 (5.3%) | 0/432 (0.0%) | 195/290 (67.2%) | 75/370 (20.3%) |
a1998 survey results were for children (<6 years old) who were immunized with hepatitis B vaccine [8].
bUnimmunized adults surveyed in 1998 were mothers who were born before hepatitis B vaccine was incorporated in the child hood immunization program [8].
cUnimmunized adults surveyed in 2009 were from this present study; their ages were from 21 to 49 years and they were born before hepatitis B vaccine was incorporated in the childhood immunization program.