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Seroconversion profiles in the 17 patients infected with one of two genotype 1b strains during an HCV outbreak in a hemodialysis unit. The blue bars indicate the detection of anti-ARFP (43-141) antibodies in our enzyme immunoassay; the other bars indicate the detection of antibodies directed at antigens encoded by the main HCV ORF in a prototype line immunoassay (yellow: low titer; orange: medium titer; brown: high titer).
