Cryptosporidiosis

Swimming pool diarrheal disease resistant to chlorine. Acid-fast oocysts causing watery diarrhea, especially in AIDS.

Key facts

CauseProtozoa
SpreadPolluted water/Contaminated food
Incubation2–10 days
VaccineNo
TreatmentAntimicrobial (Nitazoxanide)

Did you know?

Cryptosporidium demonstrates remarkable "intracellular-extracellular" parasitism by invading intestinal epithelial cells yet remaining enclosed in parasitophorous vacuoles outside the cytoplasm, essentially mastering simultaneous cellular invasion and immune evasion. This unique positioning, combined with exceptional chlorine resistance allowing oocyst survival in treated water for days, transforms properly disinfected swimming pools and municipal supplies into vectors for massive waterborne outbreaks.

Next: Cytomegalovirus

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