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  1. About Legionnaires' Disease | Legionella | CDC

    Aug 6, 2025 · Legionnaires' disease is a type of serious pneumonia caused by a type of bacteria called Legionella. Legionella most commonly causes one of two diseases: Rarely, Legionella …

  2. Legionnaires' disease - Symptoms & causes - Mayo Clinic

    Dec 22, 2025 · Legionnaires' disease is a severe form of a lung infection called pneumonia. It's caused by a bacterium known as legionella. Most people who catch Legionnaires' disease …

  3. Legionnaires' disease - Wikipedia

    On 28 August 2015, an outbreak of Legionnaire's disease was detected at San Quentin State Prison in Northern California; 81 people were sickened and the cause was sludge that had …

  4. Legionnaire's Disease - Johns Hopkins Medicine

    Legionnaire’s disease is a type of pneumonia caused by a group of bacteria called Legionella. Most healthy people exposed to Legionella do not get sick, but Legionnaire’s disease can be …

  5. Legionnaires’ Disease: Causes, Symptoms & Treatment

    Jul 27, 2022 · Legionnaires’ disease can cause pneumonia-like, gastrointestinal (gut) or neurological (brain) symptoms, starting two to 14 days after exposure to Legionella. What is …

  6. LEGIONNAIRE Definition & Meaning - Merriam-Webster

    The meaning of LEGIONNAIRE is a member of a legion.

  7. Learn About Legionnaires’ Disease - American Lung Association

    Oct 30, 2024 · Legionella, the bacteria that causes the disease, thrives in warm water and is often spread through contaminated water systems. Symptoms usually develop 2-10 days after being …

  8. Legionellosis (Legionnaires' disease)

    Dec 23, 2016 · Legionnaires' disease is caused by exposure to a bacterium that is found in water and soil. It ranges in severity from a mild influenza-like illness to a serious and sometimes fatal …

  9. What Is Legionnaires' Disease? Outbreak Kills Two - AARP

    Aug 5, 2025 · Legionnaires’ disease is a serious form of pneumonia caused by Legionella bacterium. People older than age 50 and those with diabetes, kidney failure, cancer, lung …

  10. Legionnaires' Disease | Legionella Pneumonia | MedlinePlus

    Jul 19, 2024 · Legionnaires' disease can cause life-threatening complications such as respiratory failure, kidney failure, and sepsis. About 1 out of every 10 people who get sick with …