In this activity, students do a case study of giardiasis,
an infectious disease caused by the tiny parasite Giardia
lambila ("lambilia" means intestine). Giardiasis is
sometimes called a “swimming pool” disease because it is
frequently transmitted via water from a pool that has been
contaminated by feces from an infected swimmer. Students
will apply what they have learned about the "host" vertex
of the Epidemiologic Triangle as they learn about giardiasis.