A transmission electron micrograph (TEM) showing numerous hepatitis virions, of an unknown strain.
A transmission electron micrograph (TEM) showing numerous hepatitis virions, of an unknown strain. There are five identified types of viral hepatitis and each one is caused by a different virus. Hepatitis A, B and C are the most common types. Hepatitis A is a liver disease caused by the hepatitis A virus (HAV), and can affect anyone. Hepatitis B is a serious disease caused by a virus that attacks the liver. Known as hepatitis B virus (HBV), it can cause lifelong infection, cirrhosis of the liver, liver cancer, liver failure, and death. Hepatitis C is a liver disease caused by the hepatitis C virus (HCV). 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 HBV virus to exist. 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.
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Photo credit: © Mediscan / Alamy / Afripics
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Keywords: -, blood, cirrhosis, disease, electron, em, hbv, hepatitis, infection, liver, medical, medicine, micrograph, microscopic, microscopy, tem, transmission, virions, virus
