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Volunteer for NIAID-funded clinical studies related to hepatitis on ClinicalTrials.gov.

Research Feature

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Read about the story of the hepatitis E vaccine.

Hepatitis B

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Causes

Acute hepatitis B is caused by the hepatitis B virus, which is found in certain body fluids of infected people. Chronic, or lifelong, hepatitis B is caused when the virus remains in the body beyond the acute stage.

Last Updated October 02, 2009