The predominance of Human Immunodeficiency Virus type 1 (HIV-1) circulating recombinant form 02 (CRF02_AG) in West Central Africa may be related to its replicative fitness.

[ 23 ], we observed an overall trend to slightly higher viral load in a random sample of individuals infected with CRF02_AG (average VL (CRF02_AG)} = 5.13 Log10 RNA copies/mL), compared to those infected with a subtype A or G isolate (average VL (subtype A and G) = 4.58 Log10 RNA copies/mL) (Table 1 ), although this difference was not statistically significant (P = 0.213, t-test).

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