Parasite
Cryptosporidium
Acid-fast oocyst protozoan
krip-toh-spor-ID-ee-um
High-yield clue
Tiny acid-fast oocysts + waterborne diarrhea vocabulary.
Overview
A protozoan parasite used in coursework for oocyst vocabulary, waterborne outbreak framing, and modified acid-fast staining concepts.
Classification
- Protozoan
- Apicomplexan
- Oocyst concept
Lab & identification clues
- Modified acid-fast stain vocabulary
- Antigen/PCR concepts
- Oocyst morphology
Associations
- Waterborne outbreak vocabulary
- Immunocompromised-host severity framing
- Chlorine-tolerant oocysts and recreational-water outbreak vocabulary
Commonly confused with
- Giardia duodenalis
- Entamoeba histolytica
- Cyclospora
Your notes
Original student-study summary. Sources checked: OpenStax Microbiology 2e, NCBI Bookshelf Medical Microbiology, and CDC topic pages where applicable; reviewed 2026-06. Educational only; no diagnosis, treatment, dosing, or specimen-handling guidance.