Figure 5.

Present tsetse distributions (2001–2009) and future tsetse expansion areas (2051–2059) with corresponding distributions of human population. The future expansion of tsetse distributions will take place primarily in the Highlands, the most populated areas of Kenya. Human population in areas of no tsetse is represented with colors ranging from light gray to black. Human population in areas of present tsetse distributions is represented with colors ranging from light purple to dark purple. Human population in areas of future tsetse expansion is represented with colors ranging from light red to dark red. Ancillary data sources: Population (Landscan 2008), lakes (World Resources Institute et al. 2007). (Color figure available online.)