Hepatitis B (HBV) is an infectious liver disease caused by the hepatitis B virus, which can flow from a mild form, lasting several weeks, to a serious chronic liver disease. Hepatitis B can be acute and chronic.
Acute hepatitis is a short-term disease that occurs within the first 6 months after exposure to the hepatitis virus. Acute infection can lead to chronic infection if the body can not cope with the virus on its own.
Chronic hepatitis B is a long-term illness that occurs when the hepatitis virus remains in the human body.