Table 1.
HBsAg carrier rate and prevalence of suspected hepatitis Bin male and female samples.
Figure 1.
Distribution of HBsAg carrier rate by age.
All participants were included in the community-based EHR, which contained test results for 761,544 participants. As shown here, there was a dramatic reduction in the HBsAg rate among individuals born after 1992, when a national neonatal HBV vaccination program was implemented. Prior to 1992, however, the HBsAg carrier rate was as high as 8%.
Table 2.
Factors influencing HBsAg carrier rate for ages 20 to 60 years.
Figure 2.
Comparison of HBsAg carrier rate and average cumulative HBsAg carrier rate by age (0 to 60 years) between 1992 and 2010.
The blue line represents the carrier rate in different age groups in 1992, the red line the average cumulative carrier rate from zero to a specific age group in 1992, the green line the carrier rate in different age groups in 2010, and the purple line the average cumulative carrier rate from zero to a specific age group in 1992.
Figure 3.
Comparison of predicted distribution of HBsAg carrier rate by age by the year 2020 under the 1992 and 2011Programs.
The orange bar represents the real carrier rate by age, the blue bar the average cumulative carrier rate from zero to a specific age in 2010, the green bar the average cumulative carrier rate from zero to a specific age in 2020 under the 1992 Program, and the red bar the average cumulative carrier rate from zero to a specific age in 2020 with the 2011 Program. The line at 2% is the upper limit of the low prevalence level as defined by WHO.
Table 3.
Cost and benefit analysis for 1992 and 2011 Programs.