Prevalence of Trachoma in Northern Benin: Results from 11 Population-Based Prevalence Surveys Covering 26 Districts

Figures & data

Table 1. Characteristics of the study population in each evaluation unit, Global Trachoma Mapping Project, Benin, 2014.

Department	Evaluation unit	Population	No. resident in selected HH	No. examined (% of residents)	Age range of those examined, in years (% female of those examined)	No. of children aged 1–9 years resident in selected HH	No. of children aged 1–9 years examined (%)	No. of adults aged 15+ years resident in selected HH	No. of adults aged 15+ years examined (%)
Alibori	Banikoara	248,621	5067	4764 (94.0)	1–95 (0.58)	1795	1750 (97.5)	2559	2337 (0.91)
	Gogonou–Kandi–Segbana	384,744	4931	4822 (97.8)	1–98 (0.58)	2598	2525 (97.2)	1841	1836 (1.00)
	Karimama–Malanville	234,681	4088	4057 (99.2)	1–92 (0.61)	1829	1824 (99.7)	1846	1825 (0.99)
Atacora	Boukoumbe–Toukountouna–Natitingou	227,146	5055	4955 (98.0)	1–80 (0.43)	2992	2963 (99.0)	1810	1775 (0.98)
	Tanguieta–Cobly–Materi	253,689	2625	2449 (93.3)	1–86 (0.56)	1208	1191 (98.6)	1210	1060 (0.88)
	Kouande–Kerou–Pehunco	288,502	3565	3416 (95.8)	1–92 (0.56)	1950	1923 (98.6)	1425	1306 (0.92)
Borgou	Tchaourou	221,108	5818	5430 (93.3)	1–85 (0.47)	1925	1914 (98.1)	1918	1840 (0.96)
	Nikki–Kalale–Perere	398,226	3068	2831 (92.3)	1–75 (0.59)	1653	1590 (96.2)	1119	961 (0.86)
	N’dali	114,659	5931	5630 (95.0)	1–89 (0.59)	3149	3137 (99.6)	2316	2027 (0.88)
	Sinende–Bembereke	213,848	4994	4739 (94.9)	1–90 (0.59)	2669	2542 (95.2)	1754	1676 (0.96)
Donga	Bassila–Copargo–Djougou–Ouake	542,605	3849	3378 (87.8)	1–95 (0.57)	1724	1647 (95.5)	1788	1442 (0.81)
Total		3,127,820	48,991	46,471 (94.5)	1–89 (0.56)	23,492	23,006 (97.9)	19,586	18,085 (0.92)

HH, households.

Table 2. Prevalence of trachomatous inflammation – follicular (TF), trachomatous inflammation – intense (TI), and trichiasis, by evaluation unit, Global Trachoma Mapping Project, Benin, 2014.

				Trichiasis prevalence^b in adults aged 15+ years [95% CI]
Department	Evaluation unit	TF prevalence^a in children aged 1–9 years [95% CI]	TI prevalence^a in children aged 1–9 years [95% CI]	Males	Females	Males and females	Backlog	Current surgical need^c	Number of OCOs
Alibori	Banikoara	16.7 [12.5–20.9]	0.4 [0.0–0.6]	1.4 [0.7–2.5]	2.4 [1.5–3.2]	1.9 [1.3–2.6]	2387	2138	0
	Gogonou–Kandi–Segbana	4.0 [2.9–5.6]	0.5 [0.1–0.8]	0.1 [0.0–0.3]	0.9 [0.3–1.6]	0.4 [0.1–0.7]	1048	639	1 (Kandi)
	Karimama–Malanville	3.3 [2.7–4.1]	0.5 [0.2–0.9]	0.8 [0.2–1.7]	1.5 [0.7–2.4]	1.1 [0.6–1.6]	1486	891	1 (Malanville)
Atacora	Boukoumbe–Toukountouna–Natitingou	27.9 [19.2–30.1]	5.4 [3.1–8.4]	1.9 [0.5–3.9]	1.3 [0.3–2.5]	1.5 [0.4–3.1]	1760	1533	2 (both in Natitingou)
	Tanguieta–Cobly–Materi	2.4 [1.2–4.4]	0.8 [0.1–1.5]	0.1 [0.0–0.3]	0.1 [0.0–0.3]	0.1 [0.0–0.2]	162	0	0
	Kouande–Kerou–Pehunco	4.5 [3.3–5.9]	0.7 [0.3–1.3]	0.2 [0.0–0.4]	0.5 [0.1–1.0]	0.3 [0.1–0.7]	528	217	0
Borgou	Tchaourou	5.3 [2.8–8.5]	1.3 [0.3–2.6]	1.9 [0.8–3.6]	1.7 [0.4–3.5]	1.8 [0.8–3.2]	1979	1758	0
	Nikki–Kalale–Perere	9.5 [7.3–12.1]	1.5 [0.9–2.2]	0.1 [0.0–0.2]	1.0 [0.4–2.0]	0.6 [0.2–1.1]	1095	697	0
	N’dali	2.0 [1.1–2.9]	0.2 [0.0–0.5]	0.1 [0.0–0.4]	0.6 [0.2–1.1]	0.4 [0.1–0.7]	233	111	2
	Sinende–Bembereke	2.7 [1.4–4.5]	0.0 [0.0–0.0]	0.1 [0.0–0.2]	0.6 [0.2–1.1]	0.3[0.1–0.7]	401	171	1 (Bembereke)
Donga	Bassila–Copargo–Djougou–Ouake	2.0 [1.1–3.1]	0.2 [0.2–0.5]	0.0 [0–0.0]	0.1 [0.0–0.3]	0.1 [0.0–0.3]	378	0	1 (Bassila)
	Total						11,457	8155	8

^aAdjusted for age in 1-year age bands.

^bAdjusted for sex and age in 5-year age bands.

^cCurrent surgical need = the number of individuals who require appropriate management of their trichiasis in order to meet the trichiasis component of the definition of “elimination of trachoma as a public health problem.”

OCO, ophthalmic clinical officers.

Figure 1. Prevalence of trachomatous inflammation – follicular (TF) in Benin.

Figure 2. Prevalence of trichiasis in Benin.