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Hepatitis B is a viral [[disease]] transmitted by infected blood or blood products, or thorugh unprotected sex with someone who is infected.
Hepatitis B is a viral [[disease]] transmitted by infected blood or blood products, or thorugh unprotected sex with someone who is infected.<ref>http://www.cdc.gov/vaccines/about/terms/glossary.htm#h</ref>
==References==
<references/>
[[Category:Diseases]]
[[Category:Diseases]]