Abstract
The protozoan Giardia spp. is a flagellate intestinal parasite and six species are recognized: G. agilis in amphibians, G. psittaci and G. ardeae in birds, G. microti and G. muris in rodents and G. duodenalis in humans and some domestic animals. There is also the classification according to the genetic variability of G. duodenalis, in assemblages A to H. The host becomes infected when co…