Giardiasis is a parasitic infection of the gastrointestinal tract that results from a protozoan organism called Giardia lamblia. Giardiasis, like most parasitic gastrointestinal infections, is transmitted primarily through contaminated water by an oral-fecal route - meaning the organism is ingested orally, the parasitic infection occurs, and infective forms of the parasite are passed in the feces to continue the cycle in other hosts. Giardiasis can also be transmitted by direct contact, one person to another. Giardiasis is probably the most common parasitic intestinal infection in the world, as well as in the United States.
- Q Can insects cause protozoan infections?
- Q Why do these worms not reproduce inside their host?
- Q What is a parasite?
- Q How might I get sick from bulinus snails?
- Q How do helminthic parasites reproduce?
- Q How does a protozoan infection affect my quality of life?