If you are weakly positive for hepatitis B surface antibodies, you can get a supplemental hepatitis B vaccine to increase the titer of hepatitis B virus surface antibodies, because the higher the titer of hepatitis B surface antibodies, the better the protection for the body. However, if the vaccination is not given, the body will have a memory response and the body will have a memory response when it encounters the hepatitis B virus, which may cause the hepatitis B surface antibody titer to rise again. It is usually considered that a titer of hepatitis B surface antibody greater than 100 IU/L is very good protection for the body, and if the hepatitis B surface antibody is less than 10 IU/L, it is considered weakly positive. There are two ways to obtain hepatitis B surface antibodies: one is through hepatitis B vaccination; the other is that after having been infected with the hepatitis B virus, the body clears the hepatitis B virus and can produce hepatitis B surface antibodies on its own.