<prompt> The serological marker of acute Hepatitis B infection is -HBsAg HBeAgHBsAg-Core antibodyHBsAgHBeAg  <response>: Ans. is b i.e., HBsAgCore antibody In acute hepatitis following serological markers are present:HBsAgIgM anti HBc Ag in recent infection or IgG anti HBc Ag in remote infection.HBe Ag with high infectivity or Anti HBe Ag with low infectivity. HBsAgAnti HBs AgHBe AgAnti HBe AgAnti HBc AgAcute HBV high infecti vity IgMAcute HBV low infecti vity IgMChronic HBV high infectivity IgGChronic HBV low infectivity IgGRecovery IgGImmunized 