Fig 2. Maximum likelihood phylogenetic tree representing the five TC with TDR mutations, which are still growing, that is including newly diagnosed patients.

Newly diagnosed HIV-1 infections are underlined. Antiretroviral drugs included in regimens of treated patients are indicated after each corresponding sample. Asterisks indicate subclusters with TDR which could have originated after antiretroviral treatment of patients X1492 and X1277. Sequences labeled PT followed by GenBank accessions represent viruses from Portugal retrieved from GenBank branching in C-1 cluster. Only bootstrap values ≥80% are shown.