Giardiasis, caused by the protozoan Giardia intestinalis, is the leading cause of intestinal parasitic infections in humans and pets, in particular dogs. Some of the main symptoms are diarrhea, ...

Giardiasis is an intestinal infection caused by the parasite Giardia lamblia. It often spreads through contaminated food or water and affects people in both urban and rural settings. Common Giardiasis ...

At least 15 people were sickened by a parasite after drinking from a natural spring in New Hampshire, which also tested positive for E. coli, health officials said Thursday. Giardia had been suspected ...