Progress of Trachoma Mapping in Mainland Tanzania: Results of Baseline Surveys from 2012 to 2014

Figures & data

Figure 1. Map of Tanzania showing districts previously surveyed for trachoma in 2004–2006 and locations of districts surveyed in 2012–2014.

Table 1. Characteristics of the survey population, population-based trachoma surveys, Tanzania, 2012–2014.

Region	District	Year of survey	Households sampled, n	Children aged 1–9 years		People aged 15 years and older
				Examined, n	Proportion male, %	Examined, n	Proportion male, %
Arusha	Arumeru District Council	2012	754	1292	50.2	1964	48.7
Arusha	Karatu District Council	2012	749	1499	49.8	2051	49.3
Iringa	Mufindi District Council	2014	778	1772	52.1	2048	45.0
Kagera	Muleba District Council	2014	730	1669	49.6	2057	45.6
Kagera	Ngara District Council	2014	726	1663	48.5	1981	43.7
Katavi	Nsimbo District Council	2014	724	1731	49.8	2178	46.1
Kilimanjaro	Moshi District Council	2014	743	1379	49.8	2112	41.4
Kilimanjaro	Mwanga District Council	2014	724	1226	48.4	2105	42.5
Kilimanjaro	Same District Council	2014	733	1201	51.5	2128	42.9
Kilimanjaro	Siha District Council	2013	857	1181	48.6	2198	45.0
Manyara	Babati District Council	2012	753	1285	49.7	2178	48.0
Manyara	Mbulu District Council	2012	775	1396	50.6	1821	46.5
Mara	Bunda District Council	2014	724	1513	50.1	2203	43.2
Mara	Serengeti District Council	2012	823	1191	50.9	2269	45.9
Mbeya	Chunya District Council	2014	735	1200	47.0	2164	43.5
Mtwara	Mtwara Municipal Council	2014	726	1263	48.3	2263	36.8
Mwanza	Misungwi District Council	2013	726	1282	50.6	2170	44.0
Mwanza	Sengerema District Council	2014	722	1389	48.3	2294	45.7
Njombe	Makete District Council	2014	813	1261	51.0	1965	43.5
Njombe	Njombe District Council	2014	756	1501	50.0	1948	45.7
Njombe	Wanging’ombe District Council	2014	777	1229	49.0	1990	45.6
Pwani	Kibaha District Council	2013	769	1561	50.9	2096	41.4
Ruvuma	Mbinga District Council	2014	730	1353	50.0	2115	46.9
Ruvuma	Nyasa District Council	2014	729	1324	48.7	2030	42.0
Simiyu	Bariadi District Council	2012	710	1338	49.1	2207	47.0
Simiyu	Busega District Council	2014	724	1729	50.2	2253	43.5
Tabora	Urambo District Council	2012	738	1743	51.2	2179	51.1
Tabora	Uyui District Council	2012	742	1152	51.8	2268	52.9
Tanga	Korogwe District Council	2012	733	1439	52.3	1952	46.7
Tanga	Muheza District Council	2014	725	1622	49.0	2048	40.0
Tanga	Pangani District Council	2014	723	1202	53.5	2020	37.8
Overall			23,171	43,586	50.0	65,255	44.8

Table 2. Prevalence of trachomatous inflammation–follicular (TF) among children aged 1–9 years and trichiasis among people aged 15 years and older, Tanzania, 2012–2014.

Region	District	TF, % (95% CI)	Trichiasis, % (95% CI)
Arusha	Arumeru District Council	1.9 (0.7–3.8)	0.31 (0.06–0.67)
Arusha	Karatu District Council	2.8 (1.5–4.6)	0.27 (0.00–0.65)
Iringa	Mufindi District Council	0.3 (0.1–0.6)	0.35 (0.14–0.63)
Kagera	Muleba District Council	3.0 (1.1–5.4)	0.35 (0.08–0.83)
Kagera	Ngara District Council	8.3 (4.5–12.9)	0.10 (0.00–0.27)
Katavi	Nsimbo District Council	3.9 (1.8–6.2)	0.34 (0.13–0.59)
Kilimanjaro	Moshi District Council	0.1 (0.0–0.4)	0.10 (0.00–0.27)
Kilimanjaro	Mwanga District Council	1.0 (0.1–2.4)	0.12 (0.00–0.21)
Kilimanjaro	Same District Council	1.0 (0.1–2.1)	0.05 (0.00–0.12)
Kilimanjaro	Siha District Council	3.2 (1.7–5.2)	0.20 (0.79–1.56)
Manyara	Babati District Council	0.3 (0.1–0.6)	0.55 (0.13–1.18)
Manyara	Mbulu District Council	2.8 (1.1–4.5)	0.80 (0.12–1.70)
Mara	Bunda District Council	4.1 (1.7–6.5)	0.22 (0.06–0.45)
Mara	Serengeti District Council	0.1 (0.0–0.2)	0.13 (0.05–0.39)
Mbeya	Chunya District Council	11.8 (6.8–16.5)	0.67 (0.37–0.99)
Mtwara	Mtwara Municipal Council	0.4 (0.1–0.9)	0.82 (0.38–1.25)
Mwanza	Misungwi District Council	5.5 (3.7–7.8)	0.12 (0.00–0.08)
Mwanza	Sengerema District Council	4.3 (2.8–6.3)	0.18 (0.02–0.36)
Njombe	Makete District Council	1.2 (0.5–2.2)	0.52 (0.25–0.79)
Njombe	Njombe District Council	0.3 (0.0–0.8)	0.28 (0.03–0.65)
Njombe	Wanging’ombe District Council	1.0 (0.3–1.7)	0.50 (0.21–0.85)
Pwani	Kibaha District Council	3.9 (1.0–6.8)	1.08 (0.74–1.43)
Ruvuma	Mbinga District Council	0.0 (0.0–0.1)	0.15 (0.03–0.24)
Ruvuma	Nyasa District Council	0.3 (0.1–0.6)	0.19 (0.02–0.35)
Simiyu	Bariadi District Council	1.8 (1.1–2.8)	0.14 (0.00–0.39)
Simiyu	Busega District Council	3.1 (1.9–4.8)	0.23 (0.07–0.36)
Tabora	Urambo District Council	0.4 (0.1–1.0)	0.03 (0.00–0.24)
Tabora	Uyui District Council	0.1 (0.0–0.3)	0.08 (0.00–0.19)
Tanga	Korogwe District Council	1.2 (0.3–1.9)	1.06 (0.00–2.12)
Tanga	Muheza District Council	0.1 (0.0–0.2)	0.28 (0.05–0.64)
Tanga	Pangani District Council	1.1 (0.5–1.9)	0.21 (0.05–0.44)

CI, confidence interval.

Table 3. Summary of key water and sanitation hygiene indicators by district, population-based trachoma surveys, Tanzania, 2012–2014.

Region	District	Proportion of households, %
		Using improved drinking water source	Drinking water source in yard/within 1 km	With sanitation facilities
Arusha	Arumeru District Council	66.3	58.5	89.0
Arusha	Karatu District Council	65.6	57.4	81.4
Iringa	Mufindi District Council	39.7	57.5	94.0
Kagera	Muleba District Council	9.7	32.7	76.7
Kagera	Ngara District Council	48.5	30.6	74.0
Katavi	Nsimbo District Council	29.7	45.4	76.7
Kilimanjaro	Moshi District Council	76.9	83.0	99.1
Kilimanjaro	Mwanga District Council	47.4	68.0	97.9
Kilimanjaro	Same District Council	47.7	67.4	94.4
Kilimanjaro	Siha District Council	94.4	93.2	90.4
Manyara	Babati District Council	54.4	65.9	87.9
Manyara	Mbulu District Council	31.1	54.7	71.9
Mara	Bunda District Council	10.1	31.5	67.5
Mara	Serengeti District Council	36.8	64.9	53.5
Mbeya	Chunya District Council	15.9	55.0	76.9
Mtwara	Mtwara Municipal Council	92.0	93.1	98.2
Mwanza	Misungwi District Council	82.8	61.0	65.7
Mwanza	Sengerema District Council	17.7	33.9	82.7
Njombe	Makete District Council	60.5	79.7	97.0
Njombe	Njombe District Council	23.4	59.9	97.0
Njombe	Wanging’ombe District Council	51.7	54.3	97.0
Pwani	Kibaha District Council	64.0	55.1	82.4
Ruvuma	Mbinga District Council	62.6	89.3	94.9
Ruvuma	Nyasa District Council	53.8	85.9	95.7
Simiyu	Bariadi District Council	68.7	64.9	59.3
Simiyu	Busega District Council	31.9	31.4	81.1
Tabora	Urambo District Council	14.9	66.7	70.6
Tabora	Uyui District Council	20.6	62.0	62.4
Tanga	Korogwe District Council	46.1	76.7	83.1
Tanga	Muheza District Council	40.7	51.0	96.7
Tanga	Pangani District Council	40.5	51.7	77.6
Overall		46.9	61.0	83.0

Figure 2. Prevalence of trachomatous inflammation–follicular (TF) in children aged 1–9 years and trichiasis in people aged 15 years and older, Tanzania, 2012–2014. (A) TF prevalence 2004–2006 surveys; (B) TF prevalence 2012–2014 surveys; (C) TF prevalence 2004–2014 surveys; (D) Trichiasis prevalence 2004–2006 surveys; (E) Trichiasis prevalence 2012–2014 surveys; (F) Trichiasis prevalence 2004–2014 surveys.