Q fever classification

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1];Associate Editor(s)-in-Chief: Ahmed Younes M.B.B.CH [2]

Q fever may be classified according to the course of the disease as acute or chronic. Acute Q fever has a very rapid onset and resolves within 6 months of onset. Chronic Q fever persists for more than six months and is associated with a poorer prognosis.

Q fever may be classified according to the course of the disease as follows:

• Characterized by a very rapid onset of flu-like symptoms, pneumonia, and hepatitis.
• Resolution of infection in less than 6 months.

• Characterized by persistence of infection (clinically or serologically) for more than six months.^[1]
• Chronic Q fever almost always leads to endocarditis.

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