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Cryptosporidium

Cryptosporidium
Cryptosporidium muris.jpg
Cryptosporidium muris oocysts found in human feces.
Scientific classification
Domain: Eukaryota
(unranked): Sar
(unranked): Alveolata
Phylum: Apicomplexa
Class: Conoidasida
Genus: Cryptosporidium
Tyzzer, 1907
Species

Cryptosporidium andersoni
Cryptosporidium bailey
Cryptosporidium bovis
Cryptosporidium cervine
Cryptosporidium canis
Cryptosporidium cuniculus
Cryptosporidium ducismarci
Cryptosporidium fayeri
Cryptosporidium felis
Cryptosporidium fragile
Cryptosporidium galli
Cryptosporidium hominis
Cryptosporidium marcopodum
Cryptosporidium meleagridis
Cryptosporidium molnari
Cryptosporidium muris
Cryptosporidium parvum
Cryptosporidium ryanae
Cryptosporidium saurophilum
Cryptosporidium serpentis
Cryptosporidium suis
Cryptosporidium ubiquitum
Cryptosporidium wrairi
Cryptosporidium xiaoi


Cryptosporidium andersoni
Cryptosporidium bailey
Cryptosporidium bovis
Cryptosporidium cervine
Cryptosporidium canis
Cryptosporidium cuniculus
Cryptosporidium ducismarci
Cryptosporidium fayeri
Cryptosporidium felis
Cryptosporidium fragile
Cryptosporidium galli
Cryptosporidium hominis
Cryptosporidium marcopodum
Cryptosporidium meleagridis
Cryptosporidium molnari
Cryptosporidium muris
Cryptosporidium parvum
Cryptosporidium ryanae
Cryptosporidium saurophilum
Cryptosporidium serpentis
Cryptosporidium suis
Cryptosporidium ubiquitum
Cryptosporidium wrairi
Cryptosporidium xiaoi

Cryptosporidium is a genus of apicomplexan parasitic alveolates that can cause a respiratory and gastrointestinal illness (cryptosporidiosis) that primarily involves watery diarrhea (intestinal cryptosporidiosis) with or without a persistent cough (respiratory cryptosporidiosis) in both immunocompetent and immunodeficient humans.

Treatment of gastrointestinal infection in humans involves fluid rehydration, electrolyte replacement, and management of any pain. As of January 2015, nitazoxanide is the only drug approved for the treatment of cryptosporidiosis in immunocompetent hosts. Supplemental zinc may improve symptoms, particularly in recurrent or persistent infections or in others at risk for zinc deficiency. Cryptosporidium oocysts are 4–6 µm in diameter and exhibit partial acid-fast staining. They must be differentiated from other partially acid-fast organisms including Cyclospora cayetanensis.


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