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. 2021 Feb 15;73(5):832–841. doi: 10.1093/cid/ciab139

Figure 1.

Figure 1.

(A) Phylogenetic tree showing relatedness of HIV-1 partial envelope sequences (V1-V3 region) from individuals with hyperacute HIV-1 infection from Africa and Sweden (N = 55), with HIV-1 subtype reference sequences from the Los Alamos database (N = 158); and (B) summary table showing the distribution of HIV-1 partial env (V1-V3 region) subtypes of individuals with hyperacute infection from Africa and Sweden (N = 55). Branches are colored according to HIV-1 env subtype as follows: gray (references), red (subtype A1), dark blue (subtype B), orange (subtype C), green (subtype D), light blue (recombinant BG), purple (recombinant A2D), and brown (recombinant AE). Tip labels are colored according to the country of origin as follows: gray (references; only those clustering with volunteer sequences shown), green (Rwanda), orange (Uganda), blue (Kenya), purple (Zambia), and red (Sweden). *Unable to amplify HIV-1 env region from two volunteers, though previous gag/pol/nef sequence data suggests subtype C (Zambia, n = 1) and B (Sweden, n = 1) infections and included in the analysis as such. Abbreviation: HIV-1, human immunodeficiency virus type 1.