Giardia lamblia

Precautions

Standard Precautions

General Information

Flagellated protozoan parasite, also known as G. duodenalis and G. intestinalis.

Transmission through ingestion of cysts in contaminated water, food or by the fecal-oral route.

Incubation of about 7 days, symptoms normally begin 1-3 weeks after becoming infected.

  • Reactive arthritis

  • Irritable bowel syndrome

  • Recurring diarrhea

Diagnosis of multiple stool specimens increase test sensitivity. PCR panel is the most sensitive and can be used to identify subtypes of Giardia.

CDC. Parasites - Giardia. February 26, 2021. https://www.cdc.gov/parasites/giardia/infection-sources.html

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