Figure 2.

(a) Modified GRUMP [24] masked by the limits of Pf malaria transmission [18] and projected to 2007 [27]. The red border highlights where data from Tatem et al [28] were inserted. (b) The date of the census data used in the construction of the population surface in (a), and (c) the administrative unit level of census data used in the construction of the population surface in (a).