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Hepatitis is a liver disease caused by a number of viruses known as Hepatitis A, B, C, D, and E. Some people infected with the virus might exhibit no symptoms, while others could even suffer liver failure. There are numerous causes of hepatitis, including contaminated food and water (A and E), unsafe sex (B), and infected blood (C). Vaccines that prevent hepatitis only exist for the A, B, and D varieties, although medications can be used to treat all varieties of the disease. Every year, hepatitis leads to the deaths of roughly 1 million people around the world – generally due to resultant liver cancer or other such conditions.