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HIV incidence among (a) PWID and (b) PWID currently on OAT or not on OAT. HIV incidence was calculated for each year among PWID with 95% confidence intervals indicated by the shaded areas. Data is only presented for 2009 onwards for figure (a) and 2011 onwards for figure (b) as the low numbers of PWID tested in previous years leads to excessive 95% confidence intervals.
