Which of the following interventions is not a part of airborne precautions?

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Airborne precautions are designed to prevent tiny infectious particles from staying suspended in the air and spreading to others. The most critical measures are using a negative pressure room so air flows into the room and is exhausted, keeping the door closed to maintain that airflow control, and ensuring staff wear an N95 respirator to filter inhaled air. A private room by itself isn’t a defining requirement for airborne precautions because simply having a single room doesn’t guarantee the required airflow dynamics; the negative pressure setup is the key feature that truly contains airborne particles. Therefore, the private room is not inherently part of airborne precautions, while the other measures directly support containment and protection.