<prompt> Seroconversion rate is how much after 3 doses of Hepatitis B vaccine?30507095  <response>: -Seroconversion rates exceed 95 after 3 doses of Hepatitis B vaccine. - Antibody titre 10mIUml is protective - This Vaccine usually induces long-term immunity- so, booster doses are not routinely recommended - Double dose of vaccine boosters - recommended in pts with chronic kidney disease immunodeficiency - in whom titers may wane 