The term “five-positive” refers to the five hepatitis B tests, which are used to check the presence of hepatitis B and the status of being infected or not infected with the hepatitis B virus. The five positives specifically refer to positive hepatitis B surface antibodies and positive hepatitis B core antibodies, which indicate that the body has acquired immunity to the hepatitis B virus, specifically in the second hepatitis B surface antibody. If one has been vaccinated against hepatitis B, it can become positive and thus gain immunity. If you have been infected with the virus, some people are able to clear the virus completely and become immune. The fifth positive hepatitis B core antibody indicates that the body was indeed infected with the hepatitis B virus, and although it was infected with the hepatitis B virus, the virus did not become a chronic infection. So it is possible that you have been infected with the hepatitis B virus after the hepatitis B vaccination, but the virus did not succeed in infecting you. It is also possible that the person was not previously vaccinated and was infected with the hepatitis B virus, but the body’s immune system cleared the virus completely.