Table 3.

Number of Trichuris trichiura eggs per gram of feces in captive olive baboons (Papio anubis) before and after combined treatment with ivermectin and fenbendazole

	Baboon
	A1	B1	B2	C1	C2 (control)
Before treatment
no. of samples	2	2	2	2	2
mean ± SE	114.4 ± 89.3	15.3 ± 2.0	23.2 ± 8.4	20.4 ± 3.2	32.7 ± 26.1
95% CI	−60.5 to 289.3	11.4 to 19.2	6.8–39.8	14.0–23.6	−18.4–83.8
median	114.4	15.3	23.2	20.3	32.7
range	25.1 to 203.6	13.3 to 17.2	14.9 to 31.7	17.2 to 23.6	6.6 to 58.8
After treatment
no. of samples	16	12	11	15	16
mean ± SE	0.0 ± 0.0	0.0 ± 0.0	0.0 ± 0.0	0.0 ± 0.0	64.4 ± 15.4
95% CI	0.0–0.2	0.0–0.2	0.0–0.3	0.0–0.2	34.3–94.5
median	0.0	0.0	0.0	0.0	48.1
range	0.0–0.0	0.0–0.0	0.0–0.0	0.0–0.0	0.8–191.4
% Reduction in parasite load	100	100	100	100	−96.9
Mann–Whitney U statistic	T = 33.0 P < 0.001	T = 25.0 P < 0.001	T = 25.0 P < 0.001	T = 31.0 P < 0.001	T = 15.0 P = 0.623

Baboon A2 was not infected with Trichuris trichiura and therefore is not reported here.

Fecal egg counts after treatment differed significantly (P ≤ 0.05) from that before treatment in all baboons except the control animal.