Hep B Vaccinated during birth, HBsAg reactive 20+ years later

[concernedman91]

Hi, I am new to the forum.
So, I got Hep B Vaccinated during birth as my mum has Hep B. It went extremely fine until recently I was required to undergo for Hep B blood test by a GP and my test results showed that HBsAg is reactive, and anti-HB is non reactive (Count < 3.1). Therefore my GP referred me to a hepatologist and he was surprised too as I did not share any needles, etc etc plus I got vaccinated during birth. He said it might be a false positive therefore he sent me for many blood tests including DNA sequencing as well as ultrasound scan and I can only find out the results 2 weeks later. I am extremely worried. Anyone encountered this before?

[stef2011]

if they did not check response to vaccine at birth, which has a lot of failures if the mother does not take antivirals too, you have it since birth as all chronic hbv carriers (about 3% as adults)

[StephenCastlecrag]

It is a disappointing result. Best to repeat the tests to be sure.
Please note, HBV immunization at birth can fail for a very small percentage of babies. Let's hope it was a false positive.