Described in 1937: occupational disease of abattoir workers (manage animals before and after slaughtering process) and dairy farmers
Caused by Coxiella burnetii
Obligate intracellular bacteria morphologically similar to Rickettsia
Reservoirs include cattle, goat, sheep, and ticks (Dermacentor andersoni)
CDC: category B biologic warfare agent due to its inhaled infectivity
Worldwide disease
Obligate intracellular bacteria morphologically similar to Rickettsia
Reservoirs include cattle, goat, sheep, and ticks (Dermacentor andersoni)
Q fever
Normal causes of acute fever!
Fever of unknown origin
Malaria
Fever of unknown origin 
Dengue
Acute fever
Leptospirosis