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Table 1 Study population characteristics, schistosomiasis and STHs in 29 sentinel sites in the Western half of Madagascar

From: Baseline prevalence and intensity of schistosomiasis at sentinel sites in Madagascar: Informing a national control strategy

Study population characteristic and infection n (%), mean (95 % CI)
Gender  
 Male 915 (46.7)
 Female 1,043 (53.3)
Age  
 7 years 532 (27.2)
 8 years 495 (25.3)
 9 years 474 (24.2)
 10 years 457 (23.3)
School attendance  
 Regular 1,606 (82.0)
 Not regular 352 (18.0)
Schistosomiasis  
 Any schistosomiasis 684 (35.3)
S. haematobium infection 594 (30.5)
S. haematobium heavy-intensity infection 294 (15.1)
 Mean S. haematobium egg count 62.2 (95 % CI 49.0–75.3)
S. mansoni infection 97 (5.0)
S. mansoni heavy-intensity infection 17 (0.9)
 Mean S. mansoni egg count 14.2 (95 % CI 7.7–20.6)
 Mixed schistosome infection 7 (0.5)
Soil-transmitted helminth (STH) infections  
 Any STH infection 90 (4.7)
A. lumbricoides infection 86 (4.4)
 Mean A. lumbricoides egg count 116.8 (95 % CI 58.9–174.7)
T. trichiura infection 43 (2.2)
 Mean T. trichiura egg count 1.0 (95 % CI 0.3–1.6)
 Hookworm infection 62 (3.2)
 Mean hookworm egg count 2.3 (95 % CI 0.9–3.7)
  1. School attendance = as reported by the head teacher of the respective school; S. haematobium infection = Schistosoma haematobium eggs identified by urine filtration; prevalence of heavy-intensity S. haematobium infection = >50 S. haematobium eggs per 10 mL of urine; S. mansoni infection = S. mansoni eggs identified by duplicate Kato-Katz slides; prevalence of heavy-intensity S. mansoni infection = >399 S. mansoni eggs per gram of stool (epg); mean (95 % CI) = arithmetic mean (95 % confidence interval); A. lumbricoides infection = A. lumbricoides eggs identified by duplicate Kato-Katz slides; prevalence of heavy-intensity A. lumbricoides infection = >49,999 A. lumbricoides epg of stool; Trichuris trichiura infection = T. trichiura eggs identified by duplicate Kato-Katz slides; prevalence of heavy-intensity T. trichiura infection = >9,999 T. trichiura epg of stool; Hookworm infection = hookworm eggs identified by duplicate Kato-Katz slides; prevalence of heavy-intensity hookworm infection = >3,999 hookworm epg of stool