You tested negative for Legionella — but that doesn't mean you don't have it

Tested negative for Legionella but your symptoms say otherwise? Here's what doctors want you to know

Dear Doctor Roach: I was recently admitted to the hospital with pneumonia in both lungs. Given the recent outbreak of Legionella where I live, I was concerned whether I might have had this instead. They did do some tests in the hospital to try to find out.

A doctor says 2 negative Legionella tests don't mean you're in the clear

Dear Doctor Roach: I was recently admitted to the hospital with pneumonia in both lungs. Given the recent outbreak of Legionella where I live, I was concerned whether I might have had this instead. They did do some tests in the hospital to try to find out.

A reader tested negative for Legionella — but the doctor says the clinical signs tell a different story

Dear Doctor Roach: I was recently admitted to the hospital with pneumonia in both lungs. Given the recent outbreak of Legionella where I live, I was concerned whether I might have had this instead. They did do some tests in the hospital to try to find out.

Hospital ran 2 Legionella tests and both were negative. A doctor says they may still have missed the diagnosis

Dear Doctor Roach: I was recently admitted to the hospital with pneumonia in both lungs. Given the recent outbreak of Legionella where I live, I was concerned whether I might have had this instead. They did do some tests in the hospital to try to find out.

You tested negative for Legionella — but that doesn't mean you don't have it

Dear Doctor Roach: I was recently admitted to the hospital with pneumonia in both lungs. Given the recent outbreak of Legionella where I live, I was concerned whether I might have had this instead. They did do some tests in the hospital to try to find out.

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.