Giardia: Giardiasis refers to a syndrome of diarrhea, excess gas, and abdominal cramping. It is caused by Giardia lamblia, a water-borne parasite that is worldwide in distribution. The symptoms ...

The Giardia outbreak in Bergen in autumn 2004 was the first recognised outbreak of a parasitic infection to be caused by drinking water in Norway. The outbreak was extensive, with an estimated 2 500 ...