Giardiasis is a common parasitic infection that affects the gastrointestinal tract. Caused by the protozoan parasite Giardia ...

For more information on any of these, see the Centers for Disease Control Web site (www.cdc.gov). Giardia: Giardiasis refers to a syndrome of diarrhea, excess gas, and abdominal cramping. It is caused ...

Here is everything you need to know. Giardiasis is an intestinal infection caused by a microscopic parasite called Giardia lamblia (also called Giardia intestinalis or Giardia duodenalis).