Prevalence of Trachoma in Senegal: Results of Baseline Surveys in 17 Districts

Figures & data

Table 1. District-level estimates of baseline trachoma prevalence in Senegal generated prior to 2014.

Region	District	Prevalence of trachomatous inflammation–follicular in children aged 1–9 years, %	Prevalence of trichiasis in those aged ≥15 years, % (women only, unless noted)	Year of survey
Diourbel	Diourbel	14.9	4.7	2010
	Mbacké	13.4	1.6	2010
	Touba	15.1	3.1	2011
Fatick	Dioffior	1.4	1.4	2011
	Fatick	1.3	2.0	2011
	Foundiougne	2.4	1.1	2013
	Gossas	11.7	3.3	2011
	Niakhar	4.4	1.7	2013
	Passy	5.4	1.4	2013
	Sokone	4.5	1.0	2011
Kaffrine	Birkélane	13.9	1.4	2010
	Kaffrine	13.9	1.4	2010
	Koungheul	11.5	2.1	2010
	Malem Hodar	11.7	2.9	2011
Kaolack	Guingineo	7.6	2.9	2011
	Kaolack	3.6	1.6	2011
	Ndoffane	12.9	2.5	2011
	Nioro	7.4	1.6	2010
Louga	Coki	9.8	2.3	2012
	Dahra	6.3	0.8	2011
	Darou Mousty	8.8	1.6	2008
	Keur Momar Sarr	2.7	0.8	2012
	Linguère	2.8	0.3	2009
	Louga	5.1	1.6	2010
	Sakal	9.1	1.6	2010
Thiès	Joal	7.8	2.0	2004
	Khombole	11.6	3.6	2004
	Mbour	7.1	1.5	2005
	Mékhé	23.6	4.5	2004
	Popenguine	6.2	1.9	2005
	Pout	4.8	2.1	2005
	Thiadiaye	6.7	5.2	2005
	Thiès	4.8	2.1	2004
	Tivaouane	28.7	4.5	2004
Ziguinchor	Bignona	2.3	1.5 (women & men)	2010
	Diouloulou	2.9	1.1 (women & men)	2010
	Thionk-Esyl	2.1	1.7 (women & men)	2010

Figure 1. Map of Senegal, showing regions and districts, 2014.

Figure 2. Map of Senegal, showing the 17 districts mapped for trachoma in 2014.

Table 3. Prevalence of trachomatous inflammation–follicular (TF) and trichiasis by district, Senegal, 2014.

Region	District	No of children (1–9 years) examined	TF % (95% CI)	No of adults (≥15 years) examined	Trichiasis % (95% CI) [population ≥15 years]
Kolda	Kolda	1639	3.8 (1.7–6.1)	1876	0.6 (0.3–1.0)
	Médina Yoro Foulah	1636	3.6 (2.0–5.0)	1763	0.2 (0.1–0.4)
	Vélingara	1445	4.0 (2.2–6.0)	1737	0.4 (0.1–0.8)
Matam	Kanel	1477	2.1 (1.2–3.1)	1516	0.1 (0.0–0.3)
	Matam	1507	3.6 (2.2–5.0)	1740	0.0 (0.0–0.0)
	Ranérou	1576	1.9 (1.1–2.8)	1392	0.0 (0.0–0.1)
	Thilogne	1402	3.6 (2.2–5.1)	1907	0.1 (0.0–0.2)
Saint-Louis	Dagana	1358	1.9 (0.9–3.0)	1799	0.1 (0.0–0.1)
	Pété	1579	1.9 (1.0–3.1)	1834	0.0 (0.0–0.0)
	Podor	1531	1.7 (1.0–2.6)	1944	0.1 (0.0–0.1)
	Richard Toll	1393	3.7 (2.3–5.1)	1831	0.1 (0.0–0.2)
	Saint-Louis	1352	5.1 (3.2–7.5)	1766	0.4 (0.1–0.6)
Sédhiou	Bounkiling	1579	2.5 (1.1–4.2)	1675	0.7 (0.4–1.1)
	Goudomp	1660	2.7 (1.7–3.8)	1729	1.0 (0.6–1.4)
	Sédhiou	1628	1.8 (1.0–2.9)	1767	1.1 (0.7–1.5)
Ziguinchor	Oussouye	1137	1.4 (0.6–2.0)	1997	0.2 (0.1–0.3)
	Ziguinchor	1245	3.0 (1.8–4.3)	2072	0.6 (0.2–1.0)

Table 2. Characteristics of the surveyed population by district, Senegal, 2014.

				Participants						Proportion of households (%)
Region	District	Estimated population	No of clusters surveyed	No of children (1–9 years) enumerated	Participation rate (%)	Proportion of females (%)	No of adults (≥15 years) enumerated	Participation rate (%)	Proportion of females (%)	Improved water source	Time to collect water <30min	Improved latrine
Kolda	Kolda	259034	30	1656	99	49.2	2122	88.4	56.5	24.1	76.8	52.7
	Médina Yoro Foulah	146058	30	1662	98.4	48.3	2002	88.1	55.1	28.4	72.5	64
	Vélingara	295265	30	1479	97.7	48.2	1999	86.9	57.1	37	71.8	51.5
Matam	Kanel	257330	30	1444	97.1	50.6	2344	81.4	59.1	78.1	59.9	72.5
	Matam	202503	30	1545	95.6	50.6	2028	74.8	57.7	49.2	52.9	43.6
	Ranérou	53985	30	1564	96.4	52.6	2262	76.9	57.7	65.2	54	64.6
	Thilogne	82710	30	1650	95.5	51.8	1933	72	56.2	32.1	43.8	7.3
Saint-Louis	Dagana	106332	30	1371	99.1	50.9	2204	81.6	57.7	70.6	51.3	63
	Pété	158652	30	1610	98.1	50.4	2205	83.2	60.8	87	45.2	60.1
	Podor	279992	30	1579	97	51.5	2318	83.9	60.7	67.9	52.5	71.2
	Richard Toll	166428	30	1407	99	49.6	2263	80.9	57.5	85.7	70	79
	Saint-Louis	303659	30	1371	98.6	49.4	2185	80.8	60.5	74.2	79.3	93.1
Sédhiou	Bounkiling	152772	30	1596	98.9	47.2	1894	88.4	61.8	19.7	83.9	67.3
	Goudomp	166757	30	1678	98.9	47.4	1979	87.4	61.7	19.7	84.8	51.1
	Sédhiou	159288	30	1653	98.5	49.5	2003	88.2	62	16.6	86	50
Ziguinchor	Oussouye	50944	30	1170	97.2	49.6	2446	81.6	56.6	49.3	78.8	72.8
	Ziguinchor	261689	30	1269	98.1	48.2	2446	84.7	57.1	35.2	75.2	91.1

Figure 3. Prevalence of trachomatous inflammation–follicular (TF) in the 17 districts mapped for trachoma, Senegal, 2014.

Figure 4. Prevalence of trichiasis in the 17 districts mapped for trachoma, Senegal, 2014.

Figure 5. Trachomatous inflammation–follicular (TF) prevalence by age amongst children aged 1–9 years across 17 surveyed districts, Senegal, 2014. Whiskers indicate 95% confidence intervals.

Figure 6. Trichiasis prevalence by age amongst individuals aged ≥15 years across 17 surveyed districts, Senegal, 2014. Whiskers indicate 95% confidence intervals.