Giardiasis Topic Guide
Giardiasis: Giardiasis is an infection of the small bowel caused by Giardia lamblia. It is the most common intestinal parasitic disease in the U.S. Causes of giardiasis include contaminated water and food supplies, and person to person contact. Symptoms of giardiasis include diarrhea, weight loss, bloating, gas, constipation, nausea, vomiting, rash, and fever. Treatment of giardiasis is generally with antibiotics.
Gastroenteritis (Stomach Flu) Gastroenteritis (stomach flu) is most commonly caused by viruses and bacteria like rotavirus, adenovirus, parvovirus, and astrovirus. Bacteria causing gastroenteritis include Staphylococcus aureus, E. coli, salmonella, shigella, and Campylobacter, and C difficile. Other causes may be due to chemical toxins. Treatment of gastroenteritis depends upon the cause.