... immunodeficiency virus (HIV) -1 and -2 in individuals from guinea-bissau with single or dualinfections: predominance of a distinct HIV -1 subtype A/G recombinant in West Africa. Virology 19 99, 262: 312 -320. 12 . ... extent, in the USand Puerto Rico [16 ,17 ]. In West and West Central Africa HIV types (1 and 2), HIV- 1 groups (M, O, N) and many subtypes co-circulate [18 ,19 ]. Cameroon, a country in West Central Africa, ... 74 :10 498 -10 507.38. Konings FAJ, Burda S, Urbansi MM, Zhong P, Nadas A, Nyambi P: Human Immunodeficiency Virus Type 1 (HIV -1) Circulating Recombinant Form CRF02_AG (CRF02_ AG) has a higher in vitro...