Important progress towards elimination of onchocerciasis in the West Region of Cameroon

Parasites & Vectors

Table 2 Weighted prevalence of microfilaridermia, nodules and cutaneous signs presence according to gender and age groups

	N	Parasitological examination			Clinical examination
	N	mf + (n)	Weighted mf prevalence (%)^a	Geometric mean of mf in carriers (mf/ss ± SD)	Nodule + (n)	Weighted nodule prevalence (%)^a	Geometric mean of nodule in carriers ± SD	cut + (n)	Weighted cut prevalence (%)^a
Sex
Female	1136	57	4.7	3.0 ± 4.9	29	1.7	1.3 ± 1.5	56	2.2
Male	922	68	6.5	3.5 ± 3.9	44	2.6	1.3 ± 1.5	24	1.1
Total	2058	125	5.5	3.2 ± 4.3	73	2.1	1.3 ± 1.5	80	1.7
Age categories (years)
5–9	472	19	4.0	4.7 ± 4.7	8	1.7	1.2 ± 1.4	1	0.2
10–19	609	27	4.4	2.5 ± 4.8	1	0.2	1.0 ± (-)^b	0	0
20–29	156	16	10.1	6.9 ± 2.9	5	3.2	1.2 ± 1.4	1	0.7
30–39	173	13	7.5	1.5 ± 2.4	14	8.0	1.4 ± 1.6	6	3.4
40–49	180	21	11.6	3.6 ± 5.1	11	6.1	1.3 ± 1.5	13	7.2
50–59	147	12	8.3	1.4 ± 2.4	12	8.2	1.0 ± 1.0	16	10.8
60+	297	15	5.1	2.8 ± 4.4	20	6.6	1.4 ± 1.8	41	14.0
Total	2034	123	5.5	3.2 ± 4.3	71	2.1	1.3 ± 1.5	78	1.7

Abbreviations: N number examined, Mf + (n) number with microfilaria positive skin snip, Nod + (n) number of nodule carriers, Cut + (n) number with cutaneous sign, SD standard deviation
^aIn each gender category, the indices were adjusted on age; In each age category, the indices were adjusted on sex; in the total populations, indices were adjusted on sex and age
^bStandard deviation not calculated as the number of observations is 1

ISSN: 1756-3305