What Is Legionnaires' Disease?

What is Legionnaires’ disease?

Legionnaires’ disease, also referred as legionellosis, is a severe form of pneumonia, which is caused by the bacterium called Legionella.


Usually, legionella is found in warm freshwater settings, including hot tubs, swimming pools, fountains and natural bodies of water, such as lakes, rivers, and creeks.

And Legionnaires’ disease is an airborne disease, thus patients may be infected as a result of inhaling those droplets with legionella from mist and water vapor in a sauna or hot tub.


Patients with Legionnaires’ disease may firstly have headaches, muscle pain, chills, and a high fever.
As the disease progresses, cough, difficulty to breath, chest pain, nausea, vomiting and diarrhea will appear.


After diagnosis, doctors will use antibiotics, such as fluoroquinolones, macrolides and tetracycline, for quick treatment.
Anyway, doctors will provide specifically treatment options depending on individual case.

If have any further questions, please contact your doctor.

Key words: Legionnaires’ disease; legionellosis; legionella; pneumonia; antibiotics.

* The Content is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition.