"According to 31/12/2011, notification data (analytical tests) from the National Health Institute Doutor Ricardo Jorge (INSA, I.P.), the decreasing trend concerning the percentage of drug users in the total number of notified HIV positive cases continues to be reported. From the 41,035 notifications received since 1983, near 39% (41% in 2010, 42% in 2009 and 2008, 44% in 2007 and 45% in 2006) were drug use related. Considering the different stages covered by these notifications, 45% of the AIDS cases, 33% of Symptomatic Non-AIDS cases and 35% of the asymptomatic carriers cases were drug use associated, consolidating the proportional downward trend in this group in the different stadiums of the infection."

Source

Institute on Drugs and Drug Addiction, I.P., "2012 National Report (2011 data) to the EMCDDA by the Reitox National Focal Point: PORTUGAL: New Development, Trends and in-depth information on selected issues" (Lisbon, Portugal: 2012), p. 73.
http://www.emcdda.europa.eu/h…
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