2 However, the health care environment differs from other industries in that the source and nature of the inhalation hazard (eg, infectious aerosols) is usually not immediately defined. 1 In its “hierarchy of controls” to deal with workplace hazards, the Occupational Safety and Health Administration recommends engineering measures be prioritized above others. The Centers for Disease Control and Prevention recommends administrative measures, respiratory protection, and engineering (or environmental) controls for preventing the transmission of tuberculosis, the prototypical airborne infection, in health care settings. No one of these elements is failure-proof but a redundancy of controls provides the most beneficial strategy. Comprehensive airborne infection control systems in health care settings encompass engineering controls, administrative controls, work practice controls, and personal protective equipment.
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