TABLE 1.

Potential risk factors associated with Rift Valley fever seroprevalence based on univariate logistic regression.

Variable	Level	n	% Positive	95% CI*	p
Locality	Kirehe	73	36.9	25.9–49.0	< 0.001
	Bugesera	101	17.8	10.9–26.6
	Kamonyi	97	14.4	8.1–23.0
	Gakenke	91	9.8	4.6–17.9
	Ngoma	94	22.3	14.3–32.0
	Nyagatare	139	7.9	4.0–13.7
Age	Young	152	10.5	6.1–16.5	0.006
	Adult	402	19.9	16.1–24.1
Breed	Local	326	14.1	10.5–18.3	0.009
	Pure exotic or cross	209	22.9	17.4–29.2
Sex	Male	62	11.2	4.6–21.8	0.166
	Female	500	18.0	14.7–21.6

Source: Department Biomedical Sciences, Institute of Tropical Medicine, Antwerp, BelgiumYoung, animal’s age < 12 months; adult, animal’s age > 12 months.

n, sample size; CI, confidence interval.

^*reference level.