The chances of transmitting hepatitis B to a partner are not high. Hepatitis B virus infection, if chronic, is basically a perinatal and infantile infection. For adults, if they are infected with the hepatitis B virus, if they have symptoms they are mainly acute manifestations and can be cured by complete clearance of the virus and can produce antibodies after the disease to obtain lasting immunity. If you find that your partner has hepatitis B, it is recommended that you get the hepatitis B vaccine in time. As long as the hepatitis B vaccine produces surface antibodies to hepatitis B, the protection can reach more than 95% and last for a long time, so the chances of transmitting hepatitis B to your partner are not very high. This is also true in clinical situations where one partner has hepatitis B and the other partner has not been infected with hepatitis B even after living together for decades without clear protective measures.