Giardia duodenalis is a protozoan parasite infecting the upper intestinal tract of humans, as
well as domestic and wild animals worldwide. Transmission of giardiasis occurs through the
faecal-oral route, and may be either direct (ie, person-to-person, animal-to-animal or
zoonotic) or indirect (ie, waterborne or foodborne). While asymptomatic infections are
common in both humans and animals, a wide range of enteric symptoms have been
reported, along with extra-intestinal and post-infectious complications. A definitive diagnosis …