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Legionella.io

Free tool · Estimator

Legionnaires' exposure window estimator

If you have been diagnosed with Legionnaires' disease, the source is usually somewhere you were 2 to 10 days before symptoms began. Enter your symptom-onset date to see that window.

Not medical advice

This is general information, not a diagnosis or medical advice. If you are unwell, contact a doctor or call NHS 111. Only a clinician can diagnose Legionnaires' disease.

A planning aid to help you and public health think about where to look, not a diagnosis. Sources: NHS, Legionnaires' disease (symptoms), CDC, testing & diagnosis.

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"Legionnaires' exposure date estimator." Legionella.io. https://legionella.io/tools/legionnaires-exposure-window/

Free to reuse under CC BY 4.0: quote, adapt or republish with attribution and a link back to the original.