Bayesian maximum clade credibility (MCC) trees of HIV-1 strains from Burmese LDTDs. HIV-1 subtype B (A), C (B) and CRF01_AE (C). The trees were reconstructed based on p17 sequences. The tree branches were signed by different color according to their respective geographical location. The black solid circle and the blue solid star indicated the sequences from Burmese LDTDs having geographic origin in Yunnan and Myanmar, respectively.