Giardiasis, caused by the protozoan Giardia intestinalis, is the leading cause of intestinal parasitic infections in humans ...

The pathogens Giardia duodenalis and Cryptosporidium are common causes of sometimes-fatal intestinal diseases in humans, ...

It is caused by Giardia lamblia, a water-borne parasite that is worldwide in distribution. The symptoms usually occur one to two weeks after exposure to the parasite. Symptoms initially include ...