Table 2.

Distribution of Rift Valley fever ARs and CFRs in humans by county, age-group, and gender, Kenya, May–June 2018

Variable	Population (2017)	Cases	AR/100,000	Deaths	CFR (%)
Overall	2,190,284	30	1.4	7	23
Age-group (years)
< 15	1,049,824	3	0.3	2	67
15–29	580,802	13	2.2	3	23
30–49	339,527	8	2.4	1	13
≥ 50	220,131	6	2.7	1	17
Gender
Male	1,118,726	18	1.6	6	33
Female	1,071,558	12	1.1	1	8
County
Wajir	852,963	21	2.5	3	14
Marsabit	372,931	8	2.1	3	38
Siaya	964,390	1	0.1	1	100*

AR = attack rate; CFR = case fatality rate.

^*Siaya had only one confirmed case who died, hence the 100% CFR.