KnowraGiardia duodenalisLinked fromLinked fromThe 4 pages that link to Giardia duodenalis, each with the reason it gives.All 4Broader topic 3Compared with 1GiardiasisBroader topic: This parasite, also called Giardia lamblia, is the main cause of human giardiasis.ProtozoaBroader topic: Its cysts spread through contaminated water, linking protozoan biology to sanitation.NitazoxanideBroader topic: It is the parasite responsible for the giardiasis treated with nitazoxanide.