RT Book, Section A1 Custodio, Haidee A2 Kline, Mark W. SR Print(0) ID 1182904448 T1 Cryptosporidiosis T2 Rudolph's Pediatrics, 23e YR 2018 FD 2018 PB McGraw-Hill Education PP New York, NY SN 9781259588594 LK accesspediatrics.mhmedical.com/content.aspx?aid=1182904448 RD 2024/04/19 AB Cryptosporidium species are tiny (2–6 μm), obligate intracellular parasites related to other coccidian protozoan, including Toxoplasma, Cyclospora, Isospora, Plasmodium, Eimeria, and Sarcocystis. Cryptosporidium species primarily infect the gastrointestinal tract of a variety of vertebrate hosts, including humans. Host range is largely a function of species, as a given species of parasite most efficiently maintains infection within a few species of hosts.