Hepatitis A:
: is a liver disease caused by the hepatitis
A virus (HAV). Hepatitis A can affect anyone. In the United States, hepatitis A can occur in
situations ranging from isolated cases of disease to widespread epidemics.
Hepatitis B: is a serious
disease caused by a virus that attacks the liver. The virus, which is called hepatitis B
virus (HBV), can cause lifelong infection, cirrhosis (scarring) of the liver, liver cancer,
liver failure, and death.
Hepatitis C: is a liver
disease caused by the hepatitis C virus (HCV), which is found in the blood of persons who
have the disease. HCV is spread by contact with the blood of an infected person.
Hepatitis D: is a liver
disease caused by the hepatitis D virus (HDV), a defective virus that needs the hepatitis B
virus to exist. Hepatitis D virus (HDV) is found in the blood of persons infected with the
virus.
Hepatitis E: is a liver
disease caused by the hepatitis E virus (HEV) transmitted in much the same way as hepatitis
A virus. Hepatitis E, however, does not occur often in the United States.
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