Acute Viral Hepatitis: A Comparative Study of Clinical, Biochemical, Morphological and Immunological Features in Patients with and without Australia Antigen

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Abstract
500 consecutive patients with acute viral hepatitis verified by biopsy were divided into groups of 202 patients with detectable Australia (Au) antigen and 298 patients without antigenaemia at the time of admission to hospital. Comparison was made of the initially recorded clinical, biochemical, histological and serological variables in the two groups. Judged by both histological and biochemical criteria, the acute disease was more severe in the 202 patients with Au antigen than in the 298 patients without Auantigen. Evidence is presented that this difference is possibly due more to qualitative aetiological differences between the two groups than to the duration of antigenaemia or the time of hospitalization. Thus, the demonstration of Auantigenaemia provides not only epidemiological but also relevant clinical information.