Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Q fever ?
    ### Response:
    Q fever is a worldwide disease with acute and chronic stages caused by the bacteria known as Coxiella burnetii. Cattle, sheep, and goats are the primary reservoirs although a variety of species may be infected. Organisms are excreted in birth fluids, milk, urine, and feces of infected animals and are able to survive for long periods in the environment.
    