Reducing the number of personnel in a treatment room during an aerosol-generating procedure is an example of which type of infection control measure?

The hierarchy of infection control measures includes: (1) Elimination, (2) Substitution, (3) Engineering controls, (4) Administrative controls, and (5) PPE. Administrative controls are policies, procedures, and practices that reduce exposure risk through behavior modification and workflow changes. Examples include: limiting the number of personnel in a room, scheduling high-risk procedures at specific times, implementing hand hygiene protocols, and developing written exposure control plans. Engineering controls physically alter the work environment (e.g., ventilation systems, aerosol evacuation, lead shielding, autoclave). PPE provides a final barrier between the worker and the hazard. Reducing room occupancy is a procedural/workflow change, making it an administrative control.