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Hepatitis B is a severe form of viral hepatitis transmitted in infected blood, causing fever, debility, and jaundice.Hepatitis A is usually spread by eating food or drinking water contaminated with feces carrying the virus.Their types are Hepatitis A,Hepatitis B and Hepatitis C.The virus is passed from person to person through blood or other body fluids. When HBV enters our liver it invades the liver cells and begins to multiply.To prevent this we need to go to a doctor.