<prompt> HBV all true, except -It is a DNA virusSpreads by blood transfusionsHBs Ag marker on infectionLeast chance of chronicity  <response>: HBV transmission by parenteral sexual and perinatal modes.HBsAg is the 1st marker to appear in blood after infection. HBV consist of two linear strands of DNA. REF:ANANTHANARAYAN AND PANIKERS TEXTBOOK OF MICROBIOLOGY 9TH EDITION PAGE NO:544-546 