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Water purification methods such as boiling, filtration, and iodine treatment should be used when surface water is used. Hikers or others using surface water should consider all sources as potentially contaminated.
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Workers in day-care centers or institutions should use good handwashing and hygiene techniques when going from child to child or patient to patient.
Safer sexual practices, especially regarding anal sex, may decrease the risk of contracting or spreading giardiasis.
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