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. 2020 Feb 7;17:5. doi: 10.1186/s12981-020-0263-x

Table 5.

V3 loop amino acid diversity (amino acid length, deletions, insertions, net charge) of X4 and R5 viruses in early and chronic infections

Country Early X4/R5 Chronic X4/R5
AA length Deletion position Insertion position AA net positive charge AA length Deletion position Insertion position AA net positive charge
Zambia (ZM) 34–35/35 24/None None/none 4–8/2–6 35/35 None/none None/none 1–6/1–6
South Africa (ZA) 34–35/36 10, 23/22 None/9–10 4–8/2–6 34–37/34–35 22/22 7–8, 9–10, 13–14/none 4–10/2–6
Tanzania (TZ) 34–35/34–35 22, 24/22, 24 None/none 3–6/2–6 34–35/34–35 25/22, 23 None/none 4–6/1–6
Malawi (MW) 34–35/34–35 24/24 None/none 3–5/3–5 34–35/34–38 22, 25/24 None/13–14, 14–15 2–7/2–6
Ethiopia (ET) 35/35 None/none None/none 4–6/2–5 35–37/35 None/none 12–13/none 3–8/0–6
Botswana (BW) 35/35 None/none None/none 3–6/1–6 34–35/34–37 22/22 None/13–14 2–6/1–6