Journal of
Parasitology and Vector Biology

  • Abbreviation: J. Parasitol. Vector Biol.
  • Language: English
  • ISSN: 2141-2510
  • DOI: 10.5897/JPVB
  • Start Year: 2009
  • Published Articles: 185

Full Length Research Paper

Prevalence of intestinal schistosomiasis and associated risk factors among patients living in “Vallée du Kou” in Burkina Faso one year after treatment

Nina Gouba
  • Nina Gouba
  • Université Nazi Boni, Unité de formation et de recherche en Sciences et Techniques UFR/ST, Bobo Dioulasso, Burkina Faso.
  • Google Scholar
Issaka Zongo
  • Issaka Zongo
  • Institut de Recherche en Sciences de la Santé, Direction Régionale de l’Ouest, Bobo Dioulasso, Burkina Faso.
  • Google Scholar
Hermann Sorgho
  • Hermann Sorgho
  • Institut de recherche en Sciences de la Santé Direction Régionale Centre Ouest, Nanoro, Burkina Faso.
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Alassane Haro
  • Alassane Haro
  • Université Nazi Boni, Unité de formation et de recherche en Sciences et Techniques UFR/ST, Bobo Dioulasso, Burkina Faso.
  • Google Scholar
Coulibaly Sié Bienvenu Franck
  • Coulibaly Sié Bienvenu Franck
  • Université Nazi Boni, Unité de formation et de recherche en Sciences et Techniques UFR/ST, Bobo Dioulasso, Burkina Faso.
  • Google Scholar
Olivier O. Sombié
  • Olivier O. Sombié
  • Institut de Recherche en Sciences de la Santé, Direction Régionale de l’Ouest, Bobo Dioulasso, Burkina Faso.
  • Google Scholar
Jean Bosco Ouédraogo
  • Jean Bosco Ouédraogo
  • Institut de Recherche en Sciences de la Santé, Direction Régionale de l’Ouest, Bobo Dioulasso, Burkina Faso.
  • Google Scholar


  •  Received: 21 August 2020
  •  Accepted: 16 December 2020
  •  Published: 31 January 2021

Abstract

In Burkina Faso, most reported Schistosoma infections are related to urinary schistosomiasis and focus on school-aged children. Here, we aimed to determine the prevalence of intestinal schistosomiasis and associated risk factors among patients in “Vallée du Kou” in Burkina Faso one year after treatment with praziquantel. A longitudinal study involving 980 participants of both sexes aged 6 to 80 years living in “Vallée du Kou” was carried out from February 2007 to March 2008. The participants were requested to answer to a questionnaire based on their activities and hygiene practices. At the inclusion time and during follow-up visits (1.5, 3, 6 and 12 months), stool samples were collected. Schistosoma eggs in stools were detected using the Kato-Katz test method. Patients with stool-egg-positives were treated with a single oral dose of 40 mg/kg praziquantel. Among the 980 participants enrolled, the median age was 18 years, with a minimum age of 6 and a maximum age of 80 and 57.35% were male. At baseline and at follow-up after treatment, a successive decrease in prevalence was observed from 23.10 to 13.43% at 1.5 months and to 7.42% at 3 months, with a slight recrudescence to 8.69% at six months and to 11.46% at 12 months. Swimming, an age of 6-13 years, residence, contact with a river, and defecation in an open field were the main risk factors found to be statistically significantly associated with the occurrence of Schistosoma mansoni. This study showed that one year after treatment with praziquantel, the overall prevalence of S. mansoni infection decreased. The mainly risk factors associated with infection were participant activities, residence and lack of hygiene.

Key words: Schistosoma mansoni, stools, Kato–Katz, praziquantel, prevalence, risk factors.