Epidemiology of trachoma and its implications for implementing the “SAFE” strategy in Somali Region, Ethiopia: results of 14 population-based prevalence surveys

Figures & data

Figure 1. Evaluation units for trachoma surveys, Global Trachoma Mapping Project, Somali Region, Ethiopia, 2013. Woredas and administrative zones are labelled.

Table 1. Age and sex distribution of enumerated individuals, Global Trachoma Mapping Project, Somali Region, Ethiopia, 2013.

	Age (years)
	1–9	10–14	15+	Total
Female	12158	2833	11291	27,185 (50.8%)
Male	11462	2380	13343	26,282 (49.2%)
Total	23620	5213	24634	53467 (100%)

Table 2. Prevalence of trachomatous inflammation–follicular (TF) and trachomatous inflammation–intense (TI) among children aged 1–9 years, Global Trachoma Mapping Project, Somali Region, Ethiopia, 2013.

Evaluation unit	Zone	TF^+ (1–9) number of cases, (unadjusted %)	TF^+ (1–9) adjusted^a (%)	95% CI	TI^+ (1–9) number of cases, (unadjusted %)	TI^+ (1–9) adjusted^a (%)	95%CI
Afder, Bare, Dolobay	Afder Subzone (West)	213 (11.4%)	10.7	[6.3–17.7]	6 (0.3%)	0.35	[0.0–0.7]
Guradamole, Goro Baqaqsa, Chereti/Weyib	Afder Subzone (Central)	224 (12.7%)	11.3	[6.2–14.2]	3 (0.2%)	0.14	[0.0–0.5]
Jijiga Rural, Gursum, Babile	Fafan Subzone (Central)	273 (21.1%)	18.5	[12.7–25.3]	21 (1.6%)	1.31	[0.3–2.7]
Kebribeyah, Hareshen	Fafan Subzone (East)	578 (42.1%)	38.1	[30.4–45.1]	93 (6.8%)	6.77	[2.7–12.6]
Maeso, Erer, Shinile	Sity Subzone (Central)	150 (10.2%)	8.8	[4.8–13.6]	11 (0.7%)	0.71	[1.4–9.6]
Afdem, Ayisha, Dembel	Sity Subzone (West)	125 (8.6%)	8	[4.9–13.3]	76 (5.2%)	5.45	[1.4–9.6]
Gashamo, Aware	Korahe and jerer Subzone	111 (5.7%)	5.6	[2.7–9.1]	0 (0.0%)	0	[0.0–0.0]
Danot, Boh, Geladin	Doolo Subzone	94 (4.7%)	4.1	[1.9–8.7]	4 (0.2%)	0.16	[0.0–0.4]
Gode, Adadle	Shebelle zone	151 (7.5%)	7.2	[3.9–10.4]	2 (0.1%)	0.08	[0.0–0.3]
Elkere, West Imi	Afder Subzone (East)	154 (8.3%)	7.5	[3.9–11.9]	5 (0.3%)	0.35	[0.6–3.9]
Moyale	Liben Subzone (West)	214 (13.9%)	12.6	[7.5–16.3]	37 (2.4%)	2.17	[0.4–2.0]
Hudet, Dolo Odo	Liben & Afder (Central)	306 (19.1%)	16.9	[12.1–20.5]	20 (1.2%)	1.07	[0.4–2.0]
Filtu	Liben & Afder (West)	152 (10%)	8.9	[5.6–12.5]	8 (0.5%)	0.44	[0.1–0.8]
Awbere	Fafan Subzone (West)	426 (35.9%)	33.1	[22.0–40.2]	87 (7.3%)	6.95	[1.4–12.0]

^a Adjusted for age based on 2007 Central Statistical Authority (CSA) census data.

Figure 2. Age-specific prevalences of trachomatous inflammation–follicular (TF) and trachomatous inflammation–intense (TI) in children aged 1–9 years, Global Trachoma Mapping Project, Somali Region, Ethiopia, 2013.

Table 3. Prevalence of trichiasis among adults aged over 15 years, Global Trachoma Mapping Project, Somali Region, Ethiopia, 2013.

Evaluation unit	Zone	Trichiasis (15^+), number of cases (unadjusted %)	Trichiasis (15^+) Adjusted^a (%)	95% Confidence interval
Afder, Bare, Dolobay	Afder Subzone (West)	7 (0.5%)	0.1	[0.0–0.2]
Guradamole, Goro Baqaqsa, Chereti/Weyib	Afder Subzone (Central)	18 (1.3%)	0.7	[0.3–1.4]
Jijiga Rural, Gursum, Babile	Fafan Subzone (Central)	39 (2.7%)	1.1	[0.5–1.9]
Kebribeyah, Hareshen	Fafan Subzone (East)	19 (1.3%)	0.3	[0.2–0.6]
Maeso, Erer, Shinile	Sity Subzone (Central)	22 (1.4%)	1.0	[0.4–1.8]
Afdem, Ayisha, Dembel	Sity Subzone (West)	7 (0.5%)	0.2^b	[0.1–0.3]
Gashamo, Aware	Korahe and Jerer Subzone	2 (0.1%)	0.0	[0.0–0.1]
Danot, Boh, Geladin	Doolo Subzone	6 (0.4%)	0.2 ^c	[0.0–0.5]
Gode, Adadle	Shebelle zone	7 (0.5%)	0.2^b	[0.0–0.4]
Elkere, West Imi	Afder Subzone (East)	9 (0.6%)	0.2 ^c	[0.1–0.4]
Moyale	Liben Subzone (West)	30 (2.1%)	0.8	[0.4–1.4]
Hudet, Dolo Odo	Liben & Afder (Central)	38 (2.6%)	1.0	[0.6–1.4]
Filtu	Liben & Afder (West)	12 (0.8%)	0.2 ^c	[0.1–0.5]
Awbere	Fafan Subzone (West)	45 (3.1%)	1.2	[0.6–2.1]

^aAdjusted for sex and age in 5 year bands based on 2007 Central Statistical Authority (CSA) census data.

^bRounded up to 0.2%

^cRounded down to 0.2%

Figure 3. Prevalence of trachomatous inflammation–follicular (TF) in children aged 1–9 years, Global Trachoma Mapping Project, Somali Region, Ethiopia, 2013.

Figure 4. Prevalence of trichiasis among adults aged over 15 years, Global Trachoma Mapping Project, Somali Region, Ethiopia, 2013.