Is the infectiousness of having hepatitis B with a large positive "3" (HBeAg positive) high?

Patient's question:

I only found out I had liver disease when I carefully checked. I had always had no appetite for dinner and sometimes felt nauseous. Moreover, I have chronic hepatitis B (), and it is said to be highly contagious. I am worried it might be transmitted to my wife.

Doctor's answer:

The infectiousness of hepatitis B with a large "3 positive" (HBeAg positive) is relatively stronger compared to a small "3 positive" (HBeAg negative). Therefore, it is important to take precautions in daily life to prevent spreading the virus to family members. Just one milliliter of blood containing hepatitis B virus, even if it is as small as one ten-thousandth of a percent, can infect a healthy person if it enters their bloodstream. As a result, if blood products or syringes used during surgery or intravenous injections are not fully sterilized, it can easily lead to hepatitis B transmission. However, in daily life, activities such as drinking from the same cup, kissing, ceremonial sex, or casual conversation with a hepatitis B carrier cannot transmit the virus.
There are several treatment methods for hepatitis B, but the specific approach depends on the patient's condition. Therefore, it is recommended that patients seek diagnosis and treatment as soon as symptoms appear.

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