Definition of Pontiac fever in US English:

Pontiac fever


  • A mild systemic disease with symptoms resembling influenza, probably caused by a legionella infection.

    • ‘This is a flu-like illness is known as Pontiac fever.’
    • ‘The bacteria causes both the mild Pontiac fever and the more serious Legionnaires Disease.’
    • ‘Some people who come into contact with the bacteria will develop the less serious Pontiac fever, which causes a flu-like illness, which only lasts for a few days.’


1960s: named after Pontiac, Michigan, US, where the first major outbreak was recorded.