Q fever causes: Difference between revisions
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Revision as of 21:01, 28 November 2012
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
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Overview
Q fever is caused by infection with Coxiella burnetii. This organism is uncommon but may be found in cattle, sheep, goats and other domestic mammals, including cats and dogs. The infection results from inhalation of contaminated particles in the air, and from contact with the vaginal mucus, milk, feces, urine or semen of infected animals. The incubation time is 9-40 days. It is considered possibly the most infectious disease in the world, as a human being can be infected by a single bacterium [1]. Related Key Words and Synonyms:
Coxiella burnetii Infection
Causes
Q fever is caused by the bacteria Coxiella burnetii, which lives in domestic animals such as cattle, sheep, goats, birds, and cats. Some wild animals and ticks also carry the bacteria. 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.