Fig. 2.

Spatial trend contours of disease spread and chiefdom attack rates highlight similarities and differences between the two epidemics. Spatial trend contours of cholera (A) and Ebola (B) chiefdom case onset dates spread from areas in dark red to light orange; thicker lines (A and B) show monthly increments, and thinner lines (B) show 2-wk increments. Each line of the same color represents the same timescale. Larger spacing between lines represents faster spread. Thick black lines denote regions, and thin black lines denote districts. Chiefdom attack rate quartiles for cholera (C) and Ebola (D) vary over space and regions. Colored boundaries denote regions, followed by bold black borders for districts and thin borders for chiefdoms.