DETECTS ANTIBODIES TO RUBELLA IS INDICATIVE OF ACUTE INFECTION OR VACCINATION. RUBELLA IS AN ACUTE EXANTHEMATOUS VIRAL INFECTION OF CHILDREN AND ADULTS. RASH, FEVER AND LYMPHEDENOPATHY CHARACTERIZE THE ILLNESS, THE VIRUS HAS THE POTENTIAL TO CAUSE FETAL INFECTION WITH RESULTANT BIRTH DEFECTS.THE PRESENCE OF CERTAIN ANTIBODIES MEANS A RECENT INFECTION, A PAST INFECTION, OR THAT YOU HAVE BEEN VACCINATED AGAINST THE DISEASE, THIS ANTIBODIES REMAIN IN THE BLOOD STREAM FOR YEARS.