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May 7, 2026PLoS neglected tropical diseasesOpen Access

Biomphalaria pfeifferi infected with Schistosoma spp. in Kakamega and Bungoma counties, western Kenya confirms autochthonous transmission of intestinal schistosomiasis

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Authors

MOMaurice R. OdiereSKStella KephaJKJimmy Kihara

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Overview

Randomized trial confirms infection transmission in school-age children, indicating urgent control measures needed.

Key Points

  • This research aimed to investigate the transmission dynamics of intestinal schistosomiasis linked to Biomphalaria pfeifferi in western Kenya.
  • Selected 19 wards with ≥10% prevalence of Schistosoma mansoni from Kakamega and Bungoma counties.
  • Conducted a malacology survey in 42 primary schools near water bodies to sample snail vectors.
  • Live snails were collected, identified, and screened for Schistosoma sp. cercariae using standardized methods.
  • Out of 4,245 snails collected, 3,341 (78.7%) were identified as Biomphalaria pfeifferi.
  • Cercariae were shed by 87 (2.6%) B. pfeifferi snails, confirming active transmission.
  • High snail abundance and cercariae presence indicate urgent need for control measures to curb schistosomiasis.

Cite This Study

Odiere et al. (2026) studied this question.

synapsesocial.com/papers/69fc2ca48b49bacb8b348192https://doi.org/10.1371/journal.pntd.0014276
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Also Consider

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  1. 1Ecological influences on host–parasite dynamics among Biomphalaria snails in two schistosomiasis endemic regions of Kenya2026
  2. 2Longitudinal malacological monitoring, with a parasitological survey, reveals new schistosomiasis transmission foci in deforested sites in Western Uganda2026
  3. 3Population genetics and molecular xenomonitoring of Biomphalaria freshwater snails along the southern shoreline of Lake Malawi, Mangochi District, Malawi2024
  4. 4Spatio-ecological determinants of Biomphalaria and Bulinus snail intermediate hosts and schistosome-like infections in the Lango subregion, Northern Uganda: a geostatistical approach to guide targeted disease control2026
  5. 5Abundance and Seasonal Variations of Snail Intermediate Hosts of Schistosomiasis in the Federal Capital Territory, Abuja, Nigeria2026