Table 2.

Summary of human population descriptive, RBT results and Brucella spp. PCR results among suspected brucellosis patients referred for testing at the sampled medical facilities.

Variable	Category	Narok		Marsabit		Combined human data
		Total tested	Number PCR positive	Total tested	Number PCR positive	Total tested	Number PCR positive	% Brucella spp. PCR positive (95% CI)
Age category (years)	≤ 20	39	13	18	2	58	16	27.6 (16.7–40.9)
	21–40	65	36	54	24	99	52	52.5 (42.2–62.7)
	> 40	23	8	10	3	54	17	31.5 (19.5–45.6)
RBT result	Negative	116	31	76	25	192	58	30.2 (26.2–34.4)
	Positive	48	12	15	7	46	20	43.5 (28.9–58.9)
Gender	Male	55	22	54	18	109	40	36.7 (27.7–46.4)
	Female	92	38	56	21	148	59	39.9 (31.9–48.2)
Total (site)	Total samples	147	60	110	39	257	99	38.5 (32.5–44.8)

PCR polymerase chain reaction, CI confidence interval, RBT Rose Bengal Test.