Dear Doctor: The surprising reason your Legionella test can come back negative even when you actually have it

A patient with bilateral pneumonia and other clinical markers was told negative urine tests don't tell the whole story amid a ...

Dear Doctor: I had all the signs of Legionella serious infection. Why were my tests negative?

Dear Doctor Roach: I was recently admitted to the hospital with pneumonia in both lungs. Given the recent outbreak of ...

Dear Doctor: I had pneumonia in both lungs. Did doctors miss the real cause?

Clinical scoring models give patients with 3 or more criteria a 98% to 100% likelihood of Legionella infection.

Dr. Roach: Could you have Legionella despite negative tests?

Dr. Keith Roach explains why standard urine tests for Legionella pneumonia can sometimes produce false negatives.

Dear Doctor: I had pneumonia during a local outbreak. Did doctors miss the cause?

A doctor reviewing the case found multiple clinical markers consistent with Legionella despite 2 negative urine tests.
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