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Official Website

of the Commonwealth of Pennsylvania

    The .gov means its official.

    Local, state, and federal government websites often end in .gov. Commonwealth of Pennsylvania government websites and email systems use "pennsylvania.gov" or "pa.gov" at the end of the address. Before sharing sensitive or personal information, make sure you're on an official state website. 

    Legionella bacteria can cause a serious type of pneumonia (lung infection) called Legionnaires' disease. The bacteria can also cause a less serious illness called Pontiac fever.​