What is the mortality rate of Legionnaires’ disease?

What % of people die from contracting the disease?

 

The figures below are crude estimates.

Immunocompetent (healthy individuals) given appropriate antibiotics early, 0-9%; immunocompetent individuals not given appropriate antibiotics early, 20%-35%; immunosuppressed individuals (transplant patients, cancer patients, etc.) given antibiotics early, 5-20%; immunosuppressed individuals not given antibiotics early, 40-50%.