A microorganism frequently found in rivers and lakes, which, if not treated properly, may cause diarrhea, fatigue, and cramps after ingestion.
A protozoan causing the disease Giardiasis (also known as 'beaver fever'). In Europe, the organism is sometimes called Lamblia intestinalis. Giardia lamblia attaches itself to the intestines, where they easily multiply, causing gas. It is one of the most familiar intestinal infections causing weeks of cramps, diarrhea, and considerable weight loss. Divers often develop protozoan infections, especially giardiasis and Entamoeba histolytica because they are often found in all types of waterways, including drinking water.
A protozoan, which can survive in water for 1 to 3 months, associated with the disease giardiasis. Ingestion of this protozoan in contaminated drinking water, exposure from person-to-person contact, and other exposure routes may cause giardiasis. The symptoms of this gastrointestinal disease may persist for weeks or months and include diarrhea, fatigue, and cramps.