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A5 year old boy is detected to be HBs Ag positive on two separate occasions during a screening program for hepatitis B. He is otherwise asymptomatic. Child was given three doses of recombinant hepatitis B vaccine at the age of 1 year. His mother was treated for chronic hepatitis B infection around the same time. The next relevant step for fuher investigating the child would be to –

AObtain 1-IBeAg and anti-HBe levels
BObtain anti HBs levels
CRepeat HBsAg
DRepeat another course of Hepatitis B vaccine
Pediatrics
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