<qa>  What is the name of the type of infection that is required to be treated with antiviralActive infection is defined as requiring treatment with antiviral therapy or presence of positive test results for Hepatitis B Hepatitis B surface antigen HBsAg andor total Hb core antibody anti-HBc or Hepatitis C Hepatitis C virus HCV antibody. Unless required by local regulations, patients are not required to have HIV, HCB, or HCV assessments at screening if these assessments have not been previously performed. 