[Chronic hepatitis B and delta-infection].

Delta infection was investigated in patients with chronic viral hepatitis by means of detecting antibodies to the delta agent in the patients' blood with the use of radioimmunoassay. It was demonstrated that chronic viral hepatitis B is often (in 44.5% of cases) associated with delta infection and takes a course similar to that of chronic hepatitis A. In this case demonstrable liver injury is observed, which is supported by the clinical, biochemical and morphological findings.