If your husband has a minor third-positive disease, his semen contains the hepatitis B virus, which can be transmitted to your wife through sexual intercourse. However, the following prerequisites must be met: First, if the vaginal mucosa of a woman is damaged during sex, the hepatitis B virus in the semen will enter the woman’s body through the damaged mucosa and multiply in her body. If a woman’s vaginal mucosa is intact, the hepatitis B virus will not enter her body and hepatitis B virus infection will not occur. If a woman has protective antibodies in her blood through the hepatitis B vaccine, that is, surface antibodies, even if the hepatitis B virus enters the woman’s body, it will be removed by the surface antibodies and the woman will not be infected with the hepatitis B virus.