Hepatitis B
Hepatitis B is a serious infectious disease caused by a virus that attacks the liver. It spreads when the blood or other body fluids of a person infected with the virus are absorbed into an individual's blood stream through broken skin or mucous membranes. There is a vaccine to prevent you from getting the illness.
For more information visit:
Mayo Clinic Hepatitis B Information
National Digestive Diseases Information Clearinghouse - Information on Hepatitis B
U.S. Centers for Disease Control and Prevention (CDC)
Hepatitis Fact Sheet