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Table 6 Comparison of the overall infection prevalence among ECD and older children, 2012–2017

From: Results of a national school-based deworming programme on soil-transmitted helminths infections and schistosomiasis in Kenya: 2012–2017

Year/Survey No. sampled (%) STH combined prevalence (95% CI) Any schistosome prevalence (95% CI) Prevalence of STH combined moderate to heavy intensity (95% CI) Prevalence of any schistosome moderate to heavy intensity (95% CI)
Year 1: Baseline
 ECD children 0 0 0 0 0
 Older children 3193 (100) 32.7 (29.2–36.5) 25.9 (16.4–40.8) 6.2 (4.5–8.6) 2.8 (1.3–6.4)
Year 1: Post-MDA
 ECD children 903 (15.7) 9.0 (6.3–12.8) * 1.1 (0.6–2.2) 1.1 (0.4–2.9)
 Older children 4865 (84.3) 9.1 (6.8–12.1) * 0.8 (0.5–1.3) 1.5 (0.7–3.4)
Year 2: Pre-MDA
 ECD children 267 (16.5) 10.9 (5.1–23.2) 3.7 (1.4–10.4) 1.1 (0.4–3.2) 1.5 (0.6–3.6)
 Older children 1347 (83.5) 11.4 (6.1–21.2) 6.9 (3.6–13.3) 0.4 (0.2–1.3) 2.8 (1.4–5.7)
Year 2: Post-MDA
 ECD children
 Older children
Year 3: Midterm
 ECD children 3439 (16.3) 19.9 (17.4–22.7) 13.8 (9.0–21.1) 8.6 (7.1–10.4) 1.3 (0.7–2.6)
 Older children 17624 (83.7) 15.6 (13.7–17.9) 12.9 (8.4–19.9) 5.2 (4.3–6.2) 1.3 (0.7–2.4)
Year 3: Post-MDA
 ECD children 1026 (16.7) 7.6 (5.3–10.9) 7.5 (3.7–15.1) 1.6 (0.9–2.8) 0.2 (0–0.8)
 Older children 5136 (83.3) 6.1 (4.5–8.3) 8.8 (4.9–15.6) 0.6 (0.3–0.9) 0.3 (0.2–0.5)
Year 4: Pre-MDA
 ECD children 1011 (16.3) 21.2 (16.3–27.4) 7.8 (3.1–19.7) 10.4 (7.6–14.2) 2.2 (1.0–4.6)
 Older children 5183 (83.7) 15.0 (11.9–18.9) 9.9 (3.7–26.3) 6.2 (4.6–8.4) 2.0 (0.9–4.4)
Year 4: Post-MDA
 ECD children 824 (16.6) 6.8 (4.5–10.2) 6.8 (3.1–14.7) 0.6 (0.2–1.7) 0.4 (0.1–1.1)
 Older children 4143 (83.4) 5.6 (4.0–7.8) 9.0 (4.2–19.4) 0.7 (0.3–1.3) 1.0 (0.4–2.5)
Year 5: Endline
 ECD children 3424 (16.5) 17.3 (14.8–20.2) 7.8 (4.4–14.1) 10.5 (8.8–12.4) 2.8 (1.9–4.2)
 Older children 17386 (83.6) 12.7 (10.9–14.9) 9.5 (6.2–14.6) 6.0 (5.0–7.2) 2.2 (1.6–3.0)
Year 5: Post-MDA
 ECD children 1033 (16.7) 5.1 (3.5–7.4) 6.4 (2.9–14.1) 3.2 (2.1–4.8) 2.9 (1.8–4.7)
 Older children 5147 (83.3) 2.6 (1.5–4.3) 4.5 (2.3–8.8) 1.7 (1.3–2.3) 1.8 (1.3–2.5)
  1. Key: *, insufficient observation; –, child demographic details were not collected during year 2 post-MDA