Legionellosis – United States
4 people have been infected with Legionnaires’s disease after having stayd in a Michigan hospital in the year prior.
Legionnaire’s disease is a serious type of pneumonia caused by inhaling small water droplets containing legionella bacteria. It is generally not spread from person to person.
All four individuals were hospitalized between May and December 2021 and have contracted the disease. The watersystem in the hospital is being investigated
Photo: Electron micrograph of L. pneumophila, responsible for over 90% of Legionnaire disease cases.
Legionnaires’ disease is a form of atypical pneumonia caused by any species of Legionella bacteria. Signs and symptoms include cough, shortness of breath, high fever, muscle pains, and headaches. The symptoms often begins 2–10 days after exposure.
The bacterium is found naturally in fresh water. It can contaminate hot water tanks, hot tubs, and cooling towers of large air conditioners. It is usually spread by breathing in mist that contains the bacteria.
It typically does not spread directly between people, and most people who are exposed do not become infected.
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