http://depts.washington.edu/hepstudy/hepB/prevention/vaccination/discussion.html
"After completion of a vaccine series, a HBsAb level >=10 mIU/mL is considered protective. In general, protection generated by a complete vaccine series is believed to last for at least 15 to 20 years in healthy individuals. Immunity in healthy adults and children appears to persist even though antibody levels may decline over time to low levels, even below detectable limits[18,19,20,21,22,23]."
“疫苗系列完成后,乙肝表面抗体水平> = 10 MIU / mL的考虑是保护,在一般情况下,由一个完整的疫苗系列所产生的保护被认为将持续至少15到20年在健康个体健康成年人的免疫功能儿童出现坚持,即使抗体水平随着时间的推移可能会下降到较低水平,甚至低于检出限[18,19,20,21,22,23],。“