Indiana Certified Nursing Assistant (CNA) Practice Exam

Airborne diseases primarily spread through small respiratory droplets that are released into the air when an infected person coughs, sneezes, talks, or breathes. These droplets are often so small that they can remain suspended in the air for long periods and can travel over distances greater than three feet. When another person breathes in these droplets, they can become infected.

This method of transmission distinguishes airborne diseases from those spread through other means, such as surface contact, which requires direct contact with contaminated surfaces, or food and waterborne transmission, which involves consuming contaminated food or drinks. Insect bites are also not a factor in airborne diseases, as those typically require the carrier (like a mosquito or tick) to be involved in the spread. Understanding this transmission method is vital for implementing effective infection control measures, such as wearing masks, ensuring proper ventilation, and practicing good respiratory hygiene, especially in healthcare settings.