Is it risky to have sexual contact with someone who carries hepatitis B?

There is a certain risk of infection from sexual contact with a hepatitis B carrier, but this risk can be effectively reduced through scientific protective measures. The specific analysis is as follows:

Hepatitis B virus is primarily transmitted through the exchange of bodily fluids. During sexual contact, the virus may spread via semen, vaginal secretions, and other bodily fluids, especially when unprotected, significantly increasing the risk. If the uninfected partner lacks hepatitis B surface antibodies, the virus may enter the body and infect liver cells, leading to infection. However, the risk of infection is not absolute. When the viral load of the carrier is low and the condition is stable, the infectivity is relatively weaker. Additionally, the immune status of the healthy partner also affects the likelihood of infection—those with stronger immunity are less likely to become infected.

Proper protection is key to reducing risk: getting vaccinated against hepatitis B is the most effective preventive measure. After completing the full vaccination series, sufficient antibody production in the body can directly protect against viral invasion. Consistently and correctly using condoms during sexual activity can block direct fluid contact and greatly reduce the risk of transmission.