Table 1. Estimated Zika virus infections and 95% credible intervals (CrI) using three surveillance indicators.

Surveillance Indicator	Cumulative ZIKV infections [95% CrI]	Proportion of ZIKV infections [95% CrI]	Median incident infections per 10,000 [95% CrI]	Peak weekly incident infections per 10,000 people [95% CrI]	Week of peak incidence [95% CrI]
Suspected arboviral cases	900,000 [630,000, 1,200,000]	27% [19%, 35%]	41 [28, 54]	130 [93, 180]	33 [32, 34]
Suspected ZIKV-associated GBS cases	880,000 [420,000, 1,300,000]	26% [12%, 38%]	39 [16, 56]	130 [66, 240]	32 [28, 38]
Blood bank data	960,000 [650,000, 1,300,000]	28% [19%, 37%]	35 [22, 48]	150 [99, 220]	28 [24, 34]
Combined indicators	890,000 [660,000, 1,100,000]	26% [19%, 33%]	40 [30, 52]	130 [97, 170]	33 [22, 34]

Median and 95% CrIs are shown from posterior distributions for each surveillance indicator. Peak week refers to the calendar week of the year associated with peak incidence during the epidemic. Abbreviations: CrI, credible interval; GBS, Guillain-Barré Syndrome; ZIKV, Zika virus.