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Would Vaccinations For Hepatitis-B For Children Protect Them From Infection From Their Parents Who Is Positive For It?

Posted on Tue, 17 Oct 2023

Question: my husband has been tested positive for hbsag last year..we have three daughters aged 6 ,4 and 1..we had their test done too they were all negative...it's been a year now since the test were done .my husband is on an antiviral since then and significant reduction in his viral load...My two elder daughter are vaccinated against hbsag...Do my daughter's have to undergo test again just to be sure cause they r in constant touch with their dad?

Answered by Dr. Vaishalee Punj (11 minutes later)

Brief Answer:
Vaccination protects

Detailed Answer:
Hi
Thanks for your query.

Vaccination is very protective but its not 100%.

After vaccination their report will be positive for IgG (anti HBsAg) due to vaccine but IgM maybe negative or positive depending on time lapsed since vaccination. Anti-HBcAg will be negative and also HbS Ag will be negative.

Since its been 1 year and direct contact with their father who is currently undergoing treatment. Yes it can be done in your children again. The test must have three parameters - HBsAg, Anti-HBsAg and Anti-HBcAg.

Hope it helps. Let me know if I can assist you further.
Dr Vaishalee

Above answer was peer-reviewed by : Dr. Vaishalee Punj