A hospital spokeswoman says the latest patient had been discharged from Saint Peter's but returned to the hospital suffering from pneumonia.
The first patient died on Sept. 12. The second death occurred Monday, two days after the patient tested positive.
Legionnaires' disease got its name in 1976 when 29 people died after attending an American Legion convention in Philadelphia.
CLICK HERE for a CDC fact sheet on Legionnaires' disease.
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