Baseline Prevalence of Trachoma in 21 Local Government Areas of Adamawa State, North East Nigeria

Figures & data

Table 1. Age and gender distribution of study participants surveyed for trachoma in 21 LGAs of Adamawa State, Nigeria, February 2017–March 2019.

Age (years)	Females	%	Males	%	Total	% of Total
1–10	18,333	24	19,290	25	37,623	49
11–20	6300	8	4458	6	10,758	14
21–30	6825	9	2328	3	9153	12
31–40	4779	6	3404	4	8183	11
41–50	2233	3	2765	4	4998	7
51–60	1223	2	1555	2	2778	4
61–70	741	1	879	1	1620	2
71–80	288	0.4	450	1	738	1
≥81	109	0.1	136	0.2	245	0.3
Total	40,831	54	35,265	46	76,096	100

Figure 1. Prevalence of trachomatous inflammation-follicular (TF) in 1–9-year-olds, by Local Government Area, Adamawa State, Nigeria, February 2017–March 2019. The boundaries and names shown and the designations used on this map do not imply the expression of any opinion whatsoever on the part of the authors, or the institutions with which they are affiliated, concerning the legal status of any country, territory, city or area or of its authorities, or concerning the delimitation of its frontiers or boundaries.

Figure 2. Prevalence of trachomatous trichiasis (TT) unknown to the health system in persons aged ≥15 years, by Local Government Area, Adamawa State, Nigeria, February 2017–March 2019. The boundaries and names shown and the designations used on this map do not imply the expression of any opinion whatsoever on the part of the authors, or the institutions with which they are affiliated, concerning the legal status of any country, territory, city or area or of its authorities, or concerning the delimitation of its frontiers or boundaries.

Table 2. Local government area-level prevalence of trachomatous inflammation-follicular (TF) in 1–9-year-olds, Adamawa State, Nigeria, February 2017–March 2019.

Local Government Area			1–9-year-olds		Prevalence (%)	(95% CI)
	Year of survey	Number of clusters	Enumerated	Examined
Demsa	2017	25	1786	1770	1.2	(0.3–2.8)
Fufore	2017	25	1835	1814	1.2	(0.4–2.3)
Ganye	2017	25	1761	1741	0.9	(0.4–1.5)
Girei	2017	25	1627	1601	0.5	(0.1–0.9)
Gombi	2017	25	1869	1856	0.8	(0.4–1.1)
Guyuk	2017	25	1797	1776	0.7	(0.2–1.2)
Jada	2017	25	1712	1693	0.5	(0.1–1.1)
Lamurde	2017	25	1573	1557	0.6	(0.3–1.0)
Mayo Belwa	2017	25	1662	1653	0.8	(0.4–1.4)
Numan	2017	25	1604	1591	0.5	(0.1–1.1)
Shelleng	2017	25	1790	1777	1.6	(0.9–2.4)
Song	2017	25	1919	1885	0.9	(0.3–1.8)
Yola North	2017	25	1254	1224	3.6	(1.3–5.7)
Yola South	2017	25	1502	1479	1.3	(0.3–2.2)
Hong	2019	30	1766	1746	0.6	(0.2–0.9)
Madagali	2019	30	1381	1365	0.5	(0.1–1.1)
Maiha	2019	30	2041	2020	0.4	(0.1–0.7)
Michika	2019	30	1619	1611	0.6	(0.1–1.3)
Mubi North	2019	30	1722	1703	1.0	(0.1–2.7)
Mubi South	2019	30	1918	1900	0.8	(0.2–1.3)
Toungo	2019	30	1593	1576	0.8	(0.3–1.5)

Table 3. Prevalence of trachomatous trichiasis (TT) unknown to the health system and TT backlog in 21 LGAs of Adamawa State, Nigeria, February 2017–March 2019.

Local Government Area	Estimated total population of persons aged ≥15 years^a	≥15-year-olds		Prevalence^b (%)	(95% CI)	Estimated TT backlog^c
		Enumerated	Examined
Demsa	100,941	1599	1425	0.20^d	(0.06–0.38)	202
Fufore	116,081	1786	1571	0.29	(0.00–0.85)	337
Ganye	91,889	1560	1389	0.09	(0.00–0.21)	83
Girei	72,797	1625	1430	0.09	(0.00–0.17)	66
Gombi	82,000	1374	1209	0.09	(0.00–0.18)	74
Guyuk	99,560	1434	1244	0.10	(0.00–0.22)	100
Jada	94,345	1496	1345	0.09	(0.00–0.21)	85
Lamurde	63,170	1329	1132	0.19	(0.06–0.36)	120
Mayo Belwa	85,752	1404	1239	0.07	(0.00–0.20)	60
Numan	50,805	1548	1402	0.21	(0.05–0.43)	107
Shelleng	83,479	1314	1169	0.16	(0.00–0.46)	134
Song	107,910	1383	1238	0.02	(0.00–0.06)	22
Yola North	111,018	1623	1442	0.06	(0.00–0.17)	67
Yola South	108,980	1534	1303	0.07	(0.00–0.21)	76
Hong	94,711	2424	2221	0.04	(0.01–0.10)	38
Madagali	75,503	1997	1885	0.08	(0.00–0.18)	60
Maiha	62,280	2215	2095	0.09	(0.00–0.23)	56
Michika	86,969	2289	2154	0.08	(0.00–0.20)	70
Mubi North	84,600	2185	2037	0.10	(0.02–0.23)	85
Mubi South	72,205	2,243	2,095	0.12	(0.00–0.23)	87
Toungo	29,142	2,155	2,015	0.27	(0.11–0.48)	79
Total (21 LGAs)	1,774,137					2008

^aBased on data from the 2006 census²⁸

^bPrevalence of TT unknown to the health system are displayed to two decimal places in order to provide clarity on whether or not the best estimate of prevalence was above or below the elimination threshold of 0.2% in adults ≥ 15 years

^cTT backlog was calculated as per methods previously described²⁹

^dThe data round to 0.20, but the prevalence estimate is < 0.20%

Table 4. Household access to improved drinking water source and improved latrines, by local government area (LGA), Adamawa State, Nigeria, February 2017–March 2019.

LGA	Number of households surveyed	Number of households with improved drinking water source N (%)	Number of households with drinking water source within 30 minutes return journey N (%)	Number of households with improved latrine N (%)
Demsa	622	325 (52)	529 (85)	228 (37)
Fufore	626	406 (65)	503 (80)	409 (65)
Ganye	626	317 (51)	481 (77)	411 (66)
Girei	625	468 (75)	535 (86)	395 (63)
Gombi	627	318 (51)	501 (80)	323 (52)
Guyuk	628	218 (35)	495 (79)	214 (34)
Jada	626	319 (51)	462 (74)	301 (48)
Lamurde	624	360 (58)	502 (80)	189 (30)
Mayo Belwa	625	264 (42)	491 (79)	256 (41)
Numan	626	265 (42)	457 (73)	261 (42)
Shelleng	625	303 (48)	551 (88)	277 (44)
Song	624	273 (44)	517 (83)	181 (29)
Yola North	621	325 (52)	548 (88)	591 (95)
Yola South	612	313 (51)	528 (86)	438 (72)
Hong	899	783 (87)	663 (74)	649 (72)
Madagali	896	649 (72)	793 (89)	600 (67)
Maiha	899	710 (79)	675 (75)	646 (72)
Michika	900	732 (81)	530 (59)	603 (67)
Mubi North	895	394 (44)	589 (66)	710 (79)
Mubi South	897	450 (50)	613 (68)	698 (78)
Toungo	898	654 (73)	589 (66)	434 (48)

National Population Commision. National and State Population and Housing Tables: Priority Table 1&43. Abuja: NPC; 2006.

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Solomon AW, Bella ALF, Negussu N, et al. How much trachomatous trichiasis is there? A guide to calculating district–level estimates. Community Eye Health. 2019;31(104):S5.

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