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Kinetics of anti-ARFP (43-141) antibodies during the acute phase of HCV infection in a cohort of 17 patients infected with one of two genotype 1b strains during an outbreak in a hemodialysis unit. For each patient, optical density in the enzyme immunoassay is shown at the different sampling times. The dotted line indicates the positivity cut-off. Three patients (patients 1, 6 and 14) seroconverted, and patient 3 had transiently detectable anti-ARFP (43-141) antibodies.
