Giardiasis prevention

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]


There is no vaccine against giardiasis. Prophylaxis against giardiasis is not recommended. Hygiene practices (such as hand washing, drinking safe water) may help reduce the risk of Giardia transmission.

Primary Prevention

  • There is no vaccine against giardiasis.
  • Prophylaxis against giardiasis, per se, is not recommended. Although some patients may benefit from antibiotic prophylaxis against traveler's diarrhea, antiparasitic regimens against giardiasis are not used prophylactically.
  • To prevent and control infection with the Giardia parasite, it is important to:
  • The following practices may help reduce the risk of Giardia transmission:
  • Practice good handwashing and hygiene
  • Avoid water (drinking or recreational) that may be contaminated
  • Avoid eating food that may be contaminated
  • Safe sexual practices, especially regarding anal sex, may decrease the risk of contracting or spreading giardiasis


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