It is estimated that there are between 250,000 and 600,000 hepatitis C suffers in the UK.
Only 17 per cent of sufferers have been diagnosed and only one in 20 of those diagnosed are being treated each year.
North-west London GP Dr Chris Ford, lead author of the guidance and a member of the RCGP sex, drugs and HIV task group, said that it was important for GPs to learn more about the disease because it was likely that every GP would have eight to 18 hepatitis C sufferers on their list.
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