Phylogenetic Neighbor-Joining tree of HIV <i>pol</i> gene sequences from Panamanian infected subjects sampled from 2007 to 2013.

<p>(A) Panamanian HIV (black circles) are clustered with highly support within the clade of subtype B (n = 648), subtype F1 (n = 1) and subtype C (n = 1) reference sequences. For clarification purposes, branches have been compressed by each subtype. Bootstrap values higher than 80 are shown at branches. (B) Clustering of subtype B sequences defined by colored range of diagnostic age.