FIGURE 2.

Spatiotemporal dissemination of major Guianese/Surinamese subtype B lineages. (A) Time-scaled Bayesian phylogenetic tree of HIV-1 B_CAR pol sequences from French Guiana, Suriname, Brazil, Guyana, and the Caribbean combined with subtype D reference sequences. Shaded boxes highlight the position of major B_CAR lineages from French Guiana/Suriname, Trinidad and Tobago, Jamaica, Brazil, and Guyana. The arc indicates the position of the B_CAR-SA-I lineage. (B) Time-scaled Bayesian phylogenetic tree of HIV-1 B_PANDEMIC pol sequences from the French Guiana, Suriname and closely related B_PANDEMIC sequences from the Caribbean, South/Central/North America, and Europe, combined with subtype D reference sequences. Shaded boxes highlight the position of major B_PANDEMIC lineages circulating in French Guiana and Suriname. Branches are colored according to the most probable location state of their descendent nodes as indicated in the legend at right. Branch lengths are drawn to a scale of years. The trees are automatically rooted under the assumption of a relaxed molecular clock.