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Definition of Pontiac fever

Pontiac fever: A flu-like illness caused by the bacterium Legionella pneumophila contracted by breathing mist that comes from a water source (such as air conditioning cooling towers, whirlpool spas, showers) contaminated with the bacteria. The incubation period is short, from a few hours to 2 days, before the onset of fever and muscle aches. Persons with Pontiac fever do not have pneumonia. They generally recover in 2 to 5 days without treatment. Pontiac fever is so-named because of an outbreak in 1968 in Pontiac, Michigan. It is a milder form of legionellosis than Legionnaire disease which is caused by the same bacterium.

See also: Legionella; Legionellosis (Legionnaire Disease and Pontiac Fever); Legionnaire disease.

Source: MedTerms™ Medical Dictionary
http://www.medicinenet.com/script/main/art.asp?articlekey=25522
Last Editorial Review: 10/9/2012

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