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Giardia
Intestinal infection by Giardia protozoa transmitted through contaminated water or fecal-oral route.
Key Facts
- Two forms: trophozoite (parasitic) and cyst (environmental/contagious)
- Cysts survive months in cool, moist environments
- Incubation: 5-12 days in dogs, 5-16 days in cats
- ELISA test kits dramatically improved diagnosis
- Fenbendazole (Panacur) most reliable treatment
- Metronidazole only 67% effective alone
- Dog and cat Giardia species rarely cross to humans or each other