Vaccination and serologic markers of hepatitis B virus infection

: As a result of the Decree regulating the use of the Hepatitis B vaccination having been repealed, the usefulness of the study of infection markers for said virus prior to vaccination has been reviewed. The significance of the presence of isolated infection markers (surface antigen and antibodies as opposed to the surface antigens and those of the core of the Hepatitis B virus), and a sequential type study is discussed. It is considered that vaccination must be recommended whenever it is not possible to demonstrate the simultaneous presence of the surface antigen and antibodies as opposed to the core antigen or said antibodies and those corresponding to the surface antigen.