Coxiella burnetii is a type of bacteria that causes a disease known as Q fever. It is primarily found in livestock, such as cattle, sheep, and goats, and can be transmitted to humans through inhalation of contaminated dust or contact with infected animals or their products. This bacterium is highly resilient and can survive in harsh environmental conditions. In humans, Coxiella burnetii can lead to flu-like symptoms, but it may also cause more severe complications in some cases. Vaccines are available for those at high risk, such as veterinarians and farm workers.