Parasites and worms are common infections of the digestive system and are characterized by indigestion, abdominal bloating, gas and diarrhea. In severe infection, there may be fever, joint pain, muscle aches, nausea and vomiting.

A parasite by definition is an organism that lives on another organism, uses its food and resources for growth and development and supplies nothing in return to benefit of the other organism.

There are many examples of parasitic infections that can infect humans, including giardia, cryptosporidium, entamoebiasis, lyme’s disease, pinworms, toxoplasmosis and worms including roundworms, tapeworms and flukes. While many infections can be self-limiting, other infections can become persistent. Immunocompromised individuals are particularly vulnerable to parasitic infections.

Giardia is the most common parasitic infection in North America and is estimated to occur in 5% to 10% of the population. Giardiasis is caused by the parasite Giardia lamblia and is most common in the Rocky Mountain region. It is usually caused by drinking water contaminated by the parasite. Symptoms of giardia include nausea, cramps and diarrhea.

Cryptosporidium is a parasitic infection that causes gastrointestinal and lung illness. It is commonly contracted from drinking water that is tainted with the micro-organism. Symptoms such as nausea, watery diarrhea and cramping are common.........

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