Dental Assistant Practice Exam

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What is the primary method of transmission for Tuberculosis (TB)?

Direct contact with contaminated surfaces
Inhalation of airborne droplet nuclei
Fecal-oral route
Contaminated food and water

The correct answer is: Inhalation of airborne droplet nuclei

The primary method of transmission for Tuberculosis (TB) is through the inhalation of airborne droplet nuclei. When an individual with active TB coughs, sneezes, or talks, tiny droplets containing the bacteria are released into the air. These droplets can remain suspended and are easily inhaled by others, making it essential to understand that TB spreads through the respiratory route. This method of transmission highlights the importance of respiratory hygiene, protective measures, and ventilation in preventing the spread of TB, especially in healthcare settings. Recognizing that TB is not transmitted through surfaces, contaminated food, or the fecal-oral route is essential for proper infection control and patient education. Understanding this mode of transmission also emphasizes the role of masks and appropriate isolation procedures for patients diagnosed with TB to reduce the risk of further spreading the bacteria in the community.