Which of the following is NOT classified as an airborne disease?

Influenza is primarily spread through respiratory droplets when an infected person coughs or sneezes, which classifies it as a droplet transmission disease rather than an airborne disease. In airborne diseases, pathogens are transmitted through smaller particles that can remain suspended in the air for extended periods and can be inhaled over longer distances.

In contrast, tuberculosis, measles, and varicella (chickenpox) are classified as airborne diseases because the infectious agents can be carried on small particles that remain in the air after the person has left the area. These diseases require specific airborne precautions in healthcare settings due to their potential for widespread transmission through the air.