“Hepatitis D, also known as “delta hepatitis,” is a liver infection caused by the Hepatitis D virus (HDV). Hepatitis D is uncommon in the United States. Hepatitis D only occurs among people who are infected with the Hepatitis B virus (BHV) because HDV is an incomplete virus that requires the helper function of HBV to replicate. HDV can be an acute, short-term, infection or a long-term, chronic infection.  Hepatitis E is a liver infection caused by the Hepatitis E virus (HEV). Hepatitis E is a self-limited disease that does not result in chronic infection. While rare in the United States, Hepatitis E is common in many parts of the world. It is transmitted from ingestion of fecal matter, even in microscopic amounts, and is usually associated with contaminated water supply in countries with poor sanitation. There is currently no FDA-approved vaccine for Hepatitis E.  Both these types of hepatitis have no vaccine.”

Missouri Department of Health and Senior Services