Figure 2.

Estimated diphtheria-pertussis-tetanus third-dose (DPT3) vaccine coverage in Africa, 2000–16

(A–C) DPT3 coverage among children aged 12–23 months with a 5 × 5 km resolution in 2000, 2010, and 2016. (D) Model uncertainty in 2016; model uncertainty is displayed by use of the Coffey-Feingold-Bromberg metric (CFB), a measure of uncertainty that is comparable regardless of mean coverage and scales from 0% (no uncertainty) to 100% (highest possible uncertainty for a given mean). Results are masked in grey in areas where total population density was less than ten individuals per 1 × 1 km pixel in 2015 per WorldPop³⁷ estimates, or where land cover was classified as “barren or sparsely vegetated” on the basis of MODIS³⁸ satellite data in 2013. No data were available for Cape Verde, Libya, and South Africa.