Gastro Intestinal System
A 5 year old boy is detected to be HBsAg positive on two separate occasions during a screening program for hepatitis-B, He is otherwise asymptomatic, child was given 3 doses of recombinant hepatitis-B vaccine at the age of one year, his mother was treated for chronic hepatitis-B infection around the same time, The next relevant step for further investigating the child would be to(AIIMS Nov 2012)
|A||Obtain HBe Ag and HBe antibodies|
|B||Obtain anti-HBS levels|
|C||Repeat HBS Ag|
|D||Repeat another course of hepatitis-B vaccine|
[Obtain Anti-HbS levels]
Post vaccination testing for HBs Ag & anti HBs should be done at 9 - 15 months
1. If positive for anti HBs the child is immune to HBV
2. If positive for HBs Ag only, the parent should be counseled and the child evaluated by pediatric hepatologist.
3. If negative for both HBs Ag and anti HBs, a second complete hepatitis B vaccshould be administered
Vaccination is not useful in Hbs Ag carrier patients.