10 11 Anti-HBc prevalence as the evidence of exposure to HBV showed an increasing trend by age, suggesting the high infection rate and role of horizontal HBV transmission in the community ( Graph 2 ).
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10 11 Anti-HBc prevalence as the evidence of exposure to HBV showed an increasing trend by age, suggesting the high infection rate and role of horizontal HBV transmission in the community ( Graph 2 ).