Q fever, an infectious disease caused by the bacteria Coxiella burnetii, is common among livestock such as cattle, sheep and goats. The bacteria can be transmitted to humans through the inhalation of barnyard dust that is contaminated with animal excretion containing the bacteria. Along with passing from livestock to humans, Q fever has been aerosolized in the past and used for biological warfare.
(Image Courtest of Wikimedia Commons and the National Institutes of Health)
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