Prevalence of Antibody to Hepatitis C Virus in Hemodialysis Patients

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Abstract
The prevalence of hepatitis C virus infection in hemodialysis patients in Japan was examined using sera from 418 patients from six dialysis units in 1989. The authors made use of an enzyme-linked immunosorbent assay (Ortho Diagnostics). Antibody to hepatitis C virus (anti-HCV) was detected in 127 patients (30.4%), the frequency varying from 20.0% to 34.9% in different units. The mean prevalence of anti-HCV was 20 times higher than that in blood donors. Anti-HCV positivity was not associated with antibody to hepatitis B core antigen, which was not a surrogate marker for non-A, non-B hepatitis agents in this study. Another striking finding of this study was that 84.3% of the anti-HCV-positive patients had normal liver function. Anti-HCV positivity correlated positively with the number of blood transfusions and increased with the duration of hemodialysis; however, it was 22.1% even in 113 patients never given blood transfusion. Acquisition of hepatitis C virus by dialysis patients is, therefore, not only through blood transfusions but also because of hepatitis C virus present within the unit itself. Liver dysfunction in the anti-HCV-positive patients was rare. Am J Epidemiol 1991 ;134:651-7.

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