A 29-year-old Aboriginal man attends an annual health assessment. He injects methamphetamine intermittently and reports sharing a needle once four months ago; he has no jaundice or constitutional symptoms. Hepatitis C antibody and RNA testing performed at that visit were negative, and he has since received sterile injecting equipment. Which one of the following is the most appropriate interval for repeat hepatitis C testing while this risk continues?
Keep going — a set of ten like this one, one at a time.
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