True about Giardia is

Giardia can cause traveller's diarrhea. Other protozoal causes of traveller's diarrhea Entamoeba histolytica Cyclospora Cryptosporidium Giardia inhabits the proximal small intestine i..e, duodenum and upper jejunum (not ileum) The infective stage for giardia infection is a cyst (not trophozoites).