Figure 3.

Geographic distribution of SIVcpz and SIVgor infections in sub-Saharan Africa. Field sites where wild-living (A) chimpanzees and bonobos, and (B) gorillas have been sampled are shown (each site is identified by a two-letter code; because of space limitations, only a subset is depicted). Sites where SIV infections were detected are highlighted in yellow. The upper panel depicts the ranges of the four subspecies of the common chimpanzee (Pan troglodytes verus, gray; P. t. ellioti, magenta; P. t. troglodytes, red; and P. t. schweinfurthii, blue) and of the bonobo (P. paniscus, orange). The lower panel depicts the ranges of western (Gorilla gorilla, green) and eastern (G. beringei, brown) gorillas (map courtesy of Lilian Pintea, The Jane Goodall Institute). Data were compiled from several studies (Santiago et al. 2002, 2003; Worobey et al. 2004; Keele et al. 2006; Van Heuverswyn et al. 2007; Li et al. 2010; Rudicell et al. 2010).