We used first- and second-generation assays such as Ortho 1, Ortho 2 and 4-RIBA to define prevalence and risk factors for anti-HCV antibodies in haemodialysed patients. Forty-nine (24%) subjects were found to be anti-HCV positive. Anti-HCV positivity was related to duration of dialysis and past or current elevations of GOT and GPT; the frequency of transfused patients was greater in HCV-positive than in HCV-negative subjects; there were 31 patients (prevalence of 20%) with anti-HCV antibodies among non-transfused patients. These findings show that, tested by second-generation assays, HCV infection is detected more than twice as commonly in haemodialysis patients and may be responsible for a significant proportion of liver disease in this clinical setting. Acquisition of hepatitis C virus by dialysis patients is not only through blood transfusions but also secondary to hepatitis C virus presence within the unit itself.
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