Hepatitis caused by a virus and transmitted by exposure to blood or blood products or during sexual intercourse. It causes acute and chronic hepatitis. Chronic hepatitis B can cause liver disease, cirrhosis, and liver cancer.
Formerly called serum hepatitis, it is caused by the hepatitis B virus (HBV). About 10% of cases progress to chronic hepatitis. It is spread through intravenous drug use, through sexual contact with infected individuals, through exposure to infected body fluids, and vertically from mother to child. Common symptoms include abdominal pain, fatigue, fever, jaundice, and elevated liver enzymes. A vaccine against HBV is available.