General information, not a diagnosis Method and limitations

Fact sheetParasite

Cryptosporidiosis

Cryptosporidium is a parasite responsible for diarrhea. It is particularly resistant to chlorine at the usual concentrations in swimming pools.

Documentary Enrichment: · General information

Essentials

Diarrhoeal infection transmitted by resistant oocysts in water or by contact with infected people and animals.

Agent
Cryptosporidium spp.
Transmission or exposure
Water and food · Close contact · Animal / zoonosis

Situation and vulnerability

Significant immunosuppression can cause a more lasting and severe disease.

Signs and limits of their interpretation

Watery diarrhea can be accompanied by cramps, nausea and weight loss. Watch for hydration.

Diagnosis and monitoring

Stool tests should look for this parasite with a suitable technique. Report swimming, water consumption and animal contact.

Check these markers in the CDC reference →

Prevention and care

Do not swallow bathing water and do not bathe in case of diarrhea. The instructions after confirmation must be checked with the professional and the establishment.

Practical issues

Does a chlorinated pool eliminate any risk?

No. The parasite may persist despite the usual chlorination. Hygiene and exclusion from bathing during diarrhea remain essential.

Preparing for an exchange with a professional

  • Dates of bathing and beginning of signs
  • Immunodepression and treatment
  • Contacts with animals or other patients

Bring the full minutes and dates. This information facilitates evaluation; its collection must not delay an urgent appeal.

Individual decisionThe choice of a test, treatment or prevention depends on the local situation and recommendations. In case of distress, call 911.
A clean handwashing station, soap dispenser and clean towels, no people. AI-generated illustration.
Prevention illustration — Cryptosporidiose — A clean handwashing station, soap dispenser and clean towels, no people.
Image generated by artificial intelligence. AI illustration; it does not depict a disease, biological agent or diagnosis.

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Related fact sheets

These sheets share ways or contexts of exhibition in our catalogue. This reconciliation does not establish a differential diagnosis.

Compare Cryptosporidiosis with associated sheets →

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Further reading

These publications help you verify the concepts discussed. Disease records and directory entries each identify their sources.

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