Coccidians

genera infecting the intestine of humans

• Sarcocystis

• Isospora

• Cryptosporidium

• Cyclospora

produce self-limited diarrheal disease

• immunocompetent hosts

• immunocompromised hosts

severe protracted diarrhea infection with Isospora, Cryptosporidium, and Cyclospora.

• immunocompetent hosts

• immunocompromised hosts

žcomprise a large group of apicomplexan (unicellular and spore-forming) parasites that have a ___ in the intestinal tract of invertebrate and vertebrate animals.

• asexual stage

• sexual stage

žsome species also develop ___ in extraintestinal sites in host tissues.

• asexuallly

• sexually

Undergoes both asexual and sexual development in the cytoplasm of small intestine epithelial cells

cause diarrhea and malabsorption but are generally self-limited.

• Immunocompromised hosts

• Immunocompetent hosts

disease may persist for months or years and may contribute to death.

• Immunocompetent hosts

• Immunocompromised hosts

• immunodeficient host

Diagnosis:

finding the ____ measuring 12×30 μm in fecal specimens (usually in direct wet mounts or concentration preparations)

• unsporulated oocysts

• sporulated oocysts

Diagnosis:

If the unfixed specimen is left at room temperature for 24 to 48 hours, ___ (formation of spores from vegetative cells during unfavorable environmental conditions occurs).

• spontaneous

• sporadic

• sporulation