if in born is still active because she/he get from her/his mother hard to lose that.
I'm assuming HBSAG is negative? as hbsab positive right?
yes 1-3% every year and 5-10% on medications(medicines for those only who requires treatment when the virus is active replicating fast) 50% of people seroconvert themselves when they reaches the age of 50 yrs
To add, she is inactive as liver function tests are normal and hbv dna undetected.