Prevention of Giardiasis

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  • Practice good hygiene in day care centers, retirement homes, and at home to prevent the spread of infection.
  • Wash hands frequently with soap and water for at least 15 seconds.
  • Avoid contact with the feces of an infected person.
  • When traveling in areas where giardiasis is common, infection with can be prevented by using only bottled water and avoiding consumption of raw fruits and vegetables.
  • Do not use untreated water in areas where the parasite might be present, such as lakes, rivers and streams. Boil the water for at least one minute before using it.
  • Public swimming pools that are not properly treated and maintained are another potential source of contamination. Avoid swallowing water in swimming pools and spas. Do not swim when ill with diarrhea and be sure that children in diapers have them checked often and changed in the bathroom—not near the swimming pool.
  • Wash children with soap and water after diaper changes and before re-entering the water.