If the husband has hepatitis B, does the wife need to get vaccinated again if she wants to have children?

Question
Hello doctor,
My husband has chronic hepatitis B, I have been vaccinated against hepatitis before. Please ask the doctor if the husband has hepatitis B and his wife wants to have children, should he be vaccinated again? If vaccinated again, how many injections and for how long can I have children?
Nguyen Van Quynh (1983)
Answer
Answered by Master, Doctor Vu Tan Phuc - Gastroenterologist - Department of Medical Examination & Internal Medicine - Vinmec Phu Quoc International General Hospital
Hello,
To the question "Does the husband have hepatitis B if the wife wants to have children again?", the doctor would like to answer as follows:
First of all, it is necessary to determine whether you are likely to have hepatitis B or not. . To answer this question, you will have a quantitative hepatitis B antibody (HBsAb) test. After receiving the hepatitis B vaccine, the antibody level is usually very high. However, some cases have been vaccinated, but the body does not make this antibody and thus does not protect against the hepatitis B virus.
As we know hepatitis B is transmitted through sex. So you need to confirm that there are enough HBsAb antibodies in your body to protect you from HBV. Re-injection or booster injection also depends on the amount of this antibody. If, after testing, we find enough of this antibody to protect you, there's no need for a booster shot. But if the antibody level is low, you should get a booster shot to protect against HBV infection.
If you still have questions about your husband having hepatitis B, if your wife wants to have children, you can get vaccinated again, you can go to the hospital of Vinmec Health System for further examination and advice. Thank you for trusting and sending questions to Vinmec. Wishing you lots of health.
Best regards!