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Table 1 Baseline patterns of STH and S. haematobium infections in children aged 1–4 years.

From: Patterns of soil-transmitted helminth infection and impact of four-monthly albendazole treatments in preschool children from semi-urban communities in Nigeria: a double-blind placebo-controlled randomised trial

   Age (years)
  Overall
(N = 1228)
1
(N = 422)
2
(N = 288)
3
(N = 280)
4
(N = 238)
Any helminth      
No. infected 620 (50.5%) a 167 (39.6%) 161 (55.9%) 172 (61.4%) 120 (50.4%)
A. lumbricoides      
No. Infected 585 (47.6%) 161 (38.2%) 157 (54.5%) 159 (56.8%) 108 (45.4%)
Mean epg ± SE 1077 ± 78 504 ± 67 1386 ± 190 1636 ± 218 1059 ± 166
T. trichiura      
No. Infected 46 (3.7%) 6 (1.4%) 12 (4.2%) 15 (5.4%) 13 (5.5%)
Mean epg ± SE 4 ± 2 1 ± 1 4 ± 2 2 ± 1 12 ± 11
Hookworm      
No. Infected 53 (4.3%) 8 (1.9%) 10 (3.5%) 19 (6.8%) 16 (6.7%)
Mean epg ± SE 4 ± 1 2 ± 1 3 ± 2 7 ± 4 7 ± 3
S. haematobium      
No. Infected 14 (1.1%) 3 (0.7%) 1 (0.3%) 6 (2.1%) 4 (1.7%)
Mean epg ± SEb 0.03 ± 0.01 0.02 ± 0.01 0.01 ± 0.01 0.05 ± 0.02 0.05 ± 0.02
  1. a % prevalence
  2. b The maximum number of eggs detected in an individual was 6