Table 2.

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

	Baboon
	A1	A2	B1	B2	C1	C2 (control)
Before treatment
no. of samples	4	7	6	7	5	2
mean ± SE	45.1 ± 39.6	8.6 ± 2.6	4.1 ± 0.9	15.8 ± 5.7	0.08 ± 0.08	26.2 ± 5.2
95% CI	−32.5 to 122.7	3.6 to 13.6	2.4 to 5.8	4.7 to 26.9	−0.08 to 0.2	15.9to 36.5
median	8.2	7.6	4.7	14.2	0	26.2
range	0.4–163.5	0.2–17.2	0.4–6.0	0.2–35.8	0.0–0.4	21.0–31.5
After treatment
no. of samples	15	15	11	11	14	16
mean ± SE	0.0 ± 0.0	0.0 ± 0.0	0.0 ± 0.0	0.0 ± 0.0	0.0 ± 0.0	5.5 ± 2.2
95% CI	0.0–0.2	0.0–0.2	0.0–0.3	0.0–0.3	0.0–0.2	1.2–9.8
median	0.0	0.0	0.0	0.0	0.0	1.6
range	0.0–0.0	0.0–0.0	0.0–0.0	0.0–0.0	0.0–0.0	0.5–28.8
% Reduction in parasite load	100.0	100.0	100.0	100.0	100.0	79%
Mann–Whitney U statistics	T = 111.0 P < 0.001	T = 133.0 P < 0.001	T = 87.0 P < 0.001	T = 105.0 P < 0.001	T = 77.0 P < 0.033	T = 33.0 P = 0.058

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