Household Socioeconomic and Demographic Correlates of Cryptosporidium Seropositivity in the United States.
BACKGROUND:Cryptosporidium are parasitic protozoa that infect humans, domestic animals, and wildlife globally.In the United States, cryptosporidiosis occurs in an estimated 750,000 persons annually, and is primarily caused by either of the Cryptosporidium parvum genotypes 1 and 2, exposure to which occurs through ingestion of food or water contamin