Table 4. Prevalence of Loa loa and Mansonella perstans microfilaremia in the nine administrative regions of Gabon.

Provinces	Sampling period	Number of villages surveyed	Loa loa			Mansonella perstans			Co- infection
			+/Total	%	CI 95%	+/Total	%	CI 95%	+/Total	%	CI 95%
ESTUAIRE	July 2005	30	105/314	33.4	28.3–39	72/314	22.9	18.5–28.1	29/314	9.2	6.4–13.1
HAUT OGOOUE	April 2007	18	66/364	18.1	14.4–22.6	48/364	13.2	10–17.2	9/364	2.5	1.2–4.8
MOYEN OGOOUE	January 2006	31	159/603	26.4	22.9–30.1	88/602	14.6	11.9–17.8	32/602	5.3	3.7–7.5
NGOUNIE	June 2006	22	86/463	18.6	15.2–22.5	43/461	9.3	6.9–12.4	14/461	3	1.7–5.2
NYANGA	January 2007	16	76/426	17.8	14.4–21.9	12/425	2.8	1.5–5	6/425	1.4	0.6–3.2
OGOOUE IVINDO	June 2007	41	153/624	24.5	21.2–28.1	35/624	5.6	4–7.8	14/624	2.2	1.3–3.8
OGOOUE LOLO	September 2007	18	118/423	27.9	23.7–32.5	81/423	19.1	15.6–23.3	23/423	5.4	3.6–8.2
OGOOUE MARITIME	May 2008	10	25/206	12.1	8–17.4	3/206	1.4	0.3–4.2	1/206	0.5	0–2.7
WOLEU NTEM	April 2006	34	196/969	20.2	17.8–22.9	65/969	6.7	5.3–8.5	13/969	1.3	0.7–2.3
TOTAL		220	984/4392	22.4	21.2–23.7	447/4388	10.2	9.3–11.1	141/4388	3.2	2.7–3.8