Table 1.

Estimated population at risk of infection (PAR) by each arbovirus and by overlapping arboviruses in Africa, 2015. Population estimates were calculated using the methods and data sources as defined and cited in Figure 1a,b, respectively.

Infection	Estimated Population at Risk	Percentage of African Population
Chikungunya	271 million	23%
Dengue	750 million	63%
Yellow fever *	21 million	2%
Zika	406 million	34%
At least one of the above	831 million	70%

* The value for yellow fever has been adjusted to account for reductions in the population at risk following vaccination programmes.