<prompt> The marker used for determining efficacy of Hepatitis B Vaccination is?HBsAgIgM anti HBcAgIgG anti HBcAgAnti HBsAg  <response>: ANSWER: D Anti HBsAgREF: APPENDIX-28 below for MARKERS OF HEPATITIS-BPositive Anti HBsAg determines the efficacy of hepatitis B vaccination APPENDIX - 28Markers of Hepatitis-BWeeks after exposureTestsResultsInterpretationHBsAgAnti-HBcAnti-HBsNegativeNegativeNegativeSusceptibleHBsAgAnti-HBcAnti-HBsNegativePositivePositiveImmune due to natural infectionHBsAgAnti-HBcAnti-HBsNegativeNegativePositiveImmune due to hepatitis B vaccinationHBsAg Anti-HBc IgM anti-HBc Anti-HBsPositivePositivePositiveNegativeAcutely infectedHBsAg Anti-HBc IgM anti-HBc Anti-HBsPositivePositiveNegativeNegativeChronically infectedHBsAgAnti-HBcAnti-HBsNegativePositiveNegativeInterpretation unclear four possibilities:1. Resolved Infection most common2. False-positive anti-HBc, thus susceptible3. Low level chronic infection4. Resolving acute infection 