Cryptosporidium: Cryptosporidium is a protozoan that causes a diarrheal illness similar to Giardia. Symptoms include watery diarrhea, headache, abdominal cramps, nausea, vomiting, and low-grade fever ...

Giardia parasites mimic human cell functions to break apart cells in the gut and feed inside, researchers found. This also allows bacteria already present in the body to join in and feed from the ...

Giardiasis is an intestinal infection caused by a microscopic parasite called Giardia lamblia (also called ... common causes ...