Table 3.

Attributes of at-risk population

Defining at-risk population	Population	Area (km2)	Anticipated cases (at any time point)	Targeting the most affected 80% of the at-risk population		Targeting the easiest to reach 80% of the population
				Cases reached (%)	Average time taken to reach nearest substantial settlement (> 50,000 people; in minutes)	Cases reached (%)	Average time taken to reach nearest substantial settlement (> 50,000 people; in minutes)
> 0.5%	6,185,225	17,607	158,011	95.3	96	64.4	50
> 1.0%	3,105,753	14,000	136,087	94.8	131	69.3	81
> 5.0%	733,446	6,328	87,710	90.5	259	79.4	169