I believe this has been asked and answered last week; I will repost here:
Most of us in here are patients dealing with Hepatitis C, with no doctors on board. You can post this question at the Hep B forum:
http://www.medhelp.org/forums/show/223
or research more at the U.S. Center for Disease Control site at:
http://www.cdc.gov/ncidod/diseases/hepatitis/b/faqb.htm
Good luck,
Bill