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OBJECTIVES To examine the efficacy of various batches of a formalin-inactivated whole cell Coxiella burnetti vaccine (Henzerling strain, Phase 1 [Q-Vax, CSL]) in the prevention of Q fever among abattoir workers. DESIGN AND SETTING The study was a retrospective cohort survey of all employees at three South Australian abattoirs to determine the incidence of(More)
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