Tested negative for Legionella but your doctor still isn't sure? Here's what that means

Negative urine tests for Legionella do not definitively rule out the infection, as seen in patients with bilateral pneumonia during recent outbreaks. Clinical scoring models offer a more reliable alternative, identifying Legionella with 98% to 100% accuracy when three or more specific criteria are met. These markers provide critical diagnostic clarity when standard tests fail to tell the whole story, ensuring that doctors can accurately identify the bacteria despite negative initial test results.