Q fever is an infectious disease that is spread by domestic and wild animals and ticks.
You can get Q fever by drinking raw (unpasteurized) milk, or after inhaling dust or droplets in the air that are contaminated with animal feces, blood, or birth products.
Symptoms usually develop 2 to 3 weeks after coming in contact with the bacteria. This is called the incubation period. Most people may have no symptoms; others may have moderately severe symptoms similar to the flu. If symptoms occur, they may last for several weeks.
People at risk for infection include slaughterhouse workers, veterinarians, researchers, food processors, and sheep and cattle workers. Men are infected more often than women, and most people who get Q fever are between 30 and 70 years old.
This disease is occasionally seen in children, especially those who live on a farm. In infected children younger than 3 years old, Q fever is usually discovered during a search for the cause of pneumonia.
Raoult D. Rickettsioses. In: Goldman L, Ausiello D, eds. Cecil Medicine. 23rd ed. Philadelphia, Pa: Saunders Elsevier; 2007:chap 348.
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