- Most people become infected when they inhale water containing legionella bacteria
- While it is possible to contract Legionnaires' from home plumbing, most outbreaks occur in large complexes
- When contaminated liquids accidentally enter your lungs
- Using contaminated potting soil
RISK FACTORS
-People in senior centers or homeless shelters
-People with various other medical problems such as chronic lung disease or a weakened immune system
-Smokers
-People who are 50 years of age or older
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