Positive surface and core antibodies to hepatitis B indicate that a person has previously been infected with the hepatitis B virus. Because hepatitis B core antibodies are produced by the body’s immune system in response to the hepatitis B core antigen, which cannot come from any medication but only from the hepatitis B virus, only after the hepatitis B virus has infected and multiplied in the body can the body’s immune system come into contact with the hepatitis B core antigen. This antigen is more immunogenic and although it is not detectable in the blood, the blood will be able to detect the hepatitis B core antibody. The reason why it is not a state of hepatitis B infection, but a state of healing, is that there are already surface antibodies to hepatitis B, which are protective antibodies that prevent infection by the hepatitis B virus. It is possible that this situation is true that after having been infected with the hepatitis B virus, the body’s immune system has produced immunity and cleared out the hepatitis B virus, or it is possible that the hepatitis B vaccine was given before the infection, so it is more important to get the hepatitis B vaccine.