Hepatitis B virus (HBV) is a viral infection carried in the blood causing inflammation of the liver and potentially long term damage. The virus is transmitted by contact with an infected person’s blood or body fluids. Hepatitis B is vaccine preventable.
The average incubation period for hepatitis B is 40 to 160 days. Some people experience flu-like symptoms including sore throat, tiredness, joint pains and nausea. Acute infection can be severe and cause abdominal discomfort and jaundice. There is also a liver-damaging chronic state of hepatitis B that is infectious and may be asymptomatic (without symptoms). Some people with hepatitis B go on to develop cirrhosis or liver cancer.
Acute infectious hepatitis is a notifiable disease in England and Wales.
See NHS.UK for more information about hepatitis B.