Table 2.

Individual risk of ZIKV infection in FP and the expected number of ZIKV infections exported to Brazil via travellers on commercial flights between December 2013 and February 2014

Week	Individual probability of infection	Number of weekly travellers during the FP outbreak	Expected number of travellers infected with ZIKV	95% CI (in terms of N)
02 December 2013*	0·0979584	34	3	(2–4)
09 December 2013	0·114501	16	2	(1–2)
16 December 2013	0·121446	8	1	1
23 December 2013	0·11955	0	0	0
30 December 2013	0·112717	34	4	(3–5)
07 January 2014	0·100661	18	2	(1–2)
14 January 2014	0·0845351	15	1	(0–1)
21 January 2014	0·068227	6	0	0
28 January 2014	0·0532315	30	2	(1–2)
04 February 2014	0·0407119	15	1	(0–1)
11 February 2014	0·0312288	4	0	0
18 February 2014	0·0227581	2	0	0
25 February 2014	0·0166078	2	0	(0–2)
Total			17	(11–21)

^*Numbers refers to people arriving at the end of the week.