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 How do helminthic parasites reproduce?
- Q Are all parasitic "worms" the same?
- Q Should I talk to my doctor about my parasitic infection?
- Q Why do these worms not reproduce inside their host?
- Q Should I be worried about protozoan infections?
- Q What do protozoan infections mean?