Hepatitis B is a liver infection caused by a virus. Hepatitis B is spread by contact with the blood, semen, vaginal fluids, or other bodily fluids of an infected person.
Pregnant women can pass the virus to their babies while giving birth.
Sharing toothbrushes, razors, or anything else with infected blood on it can also spread the virus. Hepatitis B is not spread by casual contact. The symptoms of hepatitis B include fatigue, poor appetite, fever, vomiting, and jaundice. Jaundice is the yellowing of the skin and whites of the eyes, and darkening of the urine. Many individuals have mild or no symptoms at all.