RESPIRATORY
OLD TUBERCULOSIS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Cutaneous route
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digestive track
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Respiratory pathway
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None of the above
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Detailed explanation-1: -tuberculosis is transmitted through the air, not by surface contact. Transmission occurs when a person inhales droplet nuclei containing M. tuberculosis, and the droplet nuclei traverse the mouth or nasal passages, upper respiratory tract, and bronchi to reach the alveoli of the lungs (Figure 2.2).
Detailed explanation-2: -TB bacteria spread through the air from one person to another. When a person with TB disease of the lungs or throat coughs, speaks, or sings, TB bacteria can get into the air. People nearby may breathe in these bacteria and become infected.
Detailed explanation-3: -The infection destroys patients’ lung tissue, causing them to cough up the bacteria, which then spread through the air and can be inhaled by others. The mechanism behind this lung damage is poorly understood.