Minutes of the Advisory Group on Hepatitis meeting, 18 October 1983 in Hannibal House, London. Matters discussed included working party on transfusion - associated hepatitis, WHO recommendations for Hepatitis B vaccine, adverse reactions to Hepatitis B vaccine, progress in the manufacture of a British Hepatitis B vaccine, PHLS study of Hepatitis B in the NHS, update on the epidemiology of Hepatitis A, update on AIDS, guidelines for health care personnel dealing with patients who are Hepatitis B antigen positive, position of doctors who are found to be carriers of Hepatitis B surface antigen (HBsAG), national surveillance of immunisation of infants at risk of acquiring Hepatitis B.