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| | Viral Hepatitis: A Through E and Beyond (Site not responding. Last check: 2007-08-19) |
 | | The hepatitis B, C, and D viruses can also cause chronic hepatitis, in which the infection is prolonged, sometimes lifelong. |
 | | People who have hepatitis B are also at risk if they have sex with a person infected with hepatitis D or if they live with an infected person. |
 | | Some cases of viral hepatitis cannot be attributed to the hepatitis A, B, C, D, or E viruses. |
| digestive.niddk.nih.gov /ddiseases/pubs/viralhepatitis (796 words) |
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