<prompt> Epidemiological markers of Hepatitis - B isHBs AgAnti - HBsAnti HBcHBe Ag  <response>: HBsAg 177- Park 19th 188-Park 20th 563-Chakraborthy-Micro 2ndHBsAg. Types are useful markers of epidemiology. These are eight antigenic types of HBs Ag HBsAg - appearance of HBs Ag is the First evidence of infection, appearing before biochemical evidence of liver disease and persists throughout the clinical illness Anti HBs Ag - signals recovery from HBV infection, noninfectivity and immunity HBeAg - indicates viral replication and infectivity 