<prompt> Incubation period of HBV is:45 to 180 days6 to 60 days10 days10 hours  <response>: Ans. is a i.e., 45 to 180 days Ref: Harrison, 18the, p. 2546; 19the, p. 2006 Remember:Enterically transmitted non - A, non - B NANB virus - HEV.Parenterally transmitted NANB - HAV.Hepatitis VirusIncubation periodHAV15 - 45 days mean 30 daysHBV30 - 180 daysHCV15 - 160 days mean 50 daysHDV30 - 180 daysHEV14 - 60 days mean 40 days 