Risk Factors for Chikungunya Virus Outbreak in Somali Region of Ethiopia, 2019: Unmatched Case-Control Study

Table 2

Distribution of chikungunya cases by the age group, Kebridahar City Administration, Somali, Ethiopia, 2019.

Variables and categories		Number of cases	Percentage (%)	At-risk population	Attack rate per 100,000 at-risk population
Age (in years)	Under 5	2	2.7	9,050	22
	5–14	16	21.6	35,970	44
	15–44	49	66.2	59,047	83
	Above 45	7	9.5	13,155	53
Sex	Male	41	55.4	66,817	62
	Female	33	44.6	50,405	66
Total		74	100.00	117,222	63