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High-precision maps find schistosomiasis hotspots — Level A1 — A village is nestled among the mountains.

High-precision maps find schistosomiasis hotspotsCEFR A1

4 Mar 2026

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Adapted from Esther Nakkazi, SciDev • CC BY 2.0

Photo by Leona Lee, Unsplash

Level A1 – Beginner
2 min
72 words
  • Schistosomiasis is a disease caused by small worms.
  • The worms are released by freshwater snails.
  • The disease affects many people in poor areas.
  • People there often do not have clean water.
  • A long study used high-precision maps to search.
  • The maps can find infection at house level.
  • Infections stay in very small local hotspots.
  • Researchers worked in rural southwest China for this study.
  • Finding hotspots helps focus local health actions quickly.

Difficult words

  • schistosomiasis — A disease caused by small parasitic worms.
  • snail — A small animal with a hard shell.
    snails
  • freshwater — Water from lakes or rivers, not salty.
  • hotspot — A small place with many infections.
    hotspots
  • researcher — A person who studies a topic carefully.
    Researchers

Tip: hover, focus or tap highlighted words in the article to see quick definitions while you read or listen.

Discussion questions

  • Do you have clean water where you live?
  • Have you seen freshwater snails near your home?
  • Would you want local health actions in your area?

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