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To investigate the prevalence and clinical features of hepatitis delta virus (HDV) superinfection in hepatitis B virus (HBV) carriers, antibody to hepatitis delta antigen (anti-HD) was determined in the sera of 328 HBV carriers in Japan. 1) Of the 328 HBV carriers, six (1.8%) were seropositive for anti-HD by enzyme linked immunosorbent assay. IgM-antibody to hepatitis delta antigen was detected in 2/6 patients with a high anti-HDV titer. None of the patients was positive for hepatitis dealt antigen. 2) HBV carriers with chronic liver disease had a greater frequency of seropositivity of anti-HD than asymptomatic HBV carriers. These data indicate that HDV superinfection may be an etiologic agent of chronic liver disease in HBV carriers.

Detection of Hepatitis Delta Virus (HDV) Markers in HBV Carriers