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{{merge|Hepatitis B}}
The '''Hepatitis B virus''' (HBV) is a [[DNA]] [[virus]] of the [[Hepadnavirus]] family. Approximately 350 million people worldwide (including 1.2 million in the [[U.S.]]) are infected, with about 1 million people per year dying of HBV-related [[liver]] [[disease]]. It is a major cause of [[hepatocellular carcinoma]] (liver cancer) and [[cirrhosis]].
A safe and effective [[Hepatitis B vaccine|vaccine]] is widely available to prevent HBV infection.
