| etiological characterization of hepatitis b surface antigen-negative hepatitis among adult patients in athens, greece. | in a 4-month period, 216 cases of acute viral hepatitis were diagnosed in adults at the infectious diseases hospital, athens, greece. twenty-six percent of these were hepatitis b surface antigen negative. a full set of clinical specimens was obtained from 19 of these patients, who were studied in depth for the etiology of their hepatitis. a total of 7 of the 19 patients had serological evidence of hepatitis a virus infection, and 2 had evidence of recent hepatitis b virus infection. the remainin ... | 1980 | 6769949 |