Assessment of schistosomiasis and soil-transmitted helminths prevalence in school-aged children and opportunities for integration of control in local health services in Kwilu Province, the Democratic Republic of the Congo

Trop Med Int Health. 2017 Nov;22(11):1442-1450. doi: 10.1111/tmi.12965. Epub 2017 Sep 14.

Abstract

Objective: To determine the prevalence of schistosomiasis (SCH) and soil-transmitted helminths (STH) in the Democratic Republic of Congo, and to assess the capacity of the local health centres for diagnosis and treatment.

Methods: Cross-sectional school-based survey in two health districts in the Province of Kwilu. We collected a stool and a urine sample for parasitological examination. Urine filtration and duplicate Kato-Katz thick smears were used for the diagnosis of SCH. Health centres were evaluated using a structured questionnaire.

Results: In total, 526 children participated in the study and the overall prevalence of Schistosoma mansoni infection was 8.9% (95% CI: 3.5-13.2) in both districts. The prevalence was higher in Mosango (11.7%; 95% CI: 8.9-14.8) than Yasa Bonga district (6.2%; 95% CI: 1.1-11.4). Urine filtration showed that Schistosoma haematobium infection was not present. The combined STH infection prevalence was 58.1% in both districts; hookworm infection was the most common STH found in 52.9% (95% CI: 29.3-62.4) of subjects, followed by Ascaris lumbricoides 9.3% (95% CI: 5.8-15.5) and Trichuris trichiura 2.1% (95% CI: 0.9-4.9). Mixed STH infections were observed as well as SCH-STH coinfection.

Conclusion: Further mapping of both SCH and STH burden is needed, and coverage of preventive chemotherapy in school-aged children should be increased.

Keywords: MNT; NTD; helminthes; helminths; parasites; schistosomiase; schistosomiasis.

MeSH terms

  • Animals
  • Ascariasis / epidemiology
  • Ascariasis / prevention & control
  • Ascaris lumbricoides
  • Child
  • Coinfection / epidemiology
  • Coinfection / prevention & control*
  • Cross-Sectional Studies
  • Democratic Republic of the Congo / epidemiology
  • Female
  • Health Services*
  • Helminthiasis / epidemiology
  • Helminthiasis / prevention & control*
  • Helminths / growth & development*
  • Humans
  • Intestinal Diseases, Parasitic / epidemiology
  • Intestinal Diseases, Parasitic / prevention & control*
  • Male
  • Prevalence
  • Schistosoma haematobium
  • Schistosoma mansoni
  • Schistosomiasis haematobia / epidemiology
  • Schistosomiasis haematobia / prevention & control
  • Schistosomiasis mansoni / epidemiology
  • Schistosomiasis mansoni / prevention & control
  • Schools
  • Soil / parasitology*
  • Trichuriasis / epidemiology
  • Trichuriasis / prevention & control
  • Trichuris

Substances

  • Soil