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Trends of proportion of transmitted drug resistance (TDR) in migrants followed up in Portuguese hospitals (2001–2017). N(2001–2008) = 137, N(2009–2011) = 325, N(2012–2014) = 228, N(2015–2017) = 327. (A) Trend for overall TDR. (B) Trend for transmitted nucleoside reverse transcriptase inhibitor (NRTI) resistance. (C) Trend for transmitted NNRTI resistance. (D) Trend for transmitted protease inhibitors (PI) resistance.
