Final answer:
The site commonly associated with primary tuberculosis infection is the Lung.
Step-by-step explanation:
The site commonly associated with primary tuberculosis infection is the Lung.
After inhalation, the bacteria enter the alveoli, where they are phagocytized by macrophages. If not eliminated by macrophages, the infection can progress and cause an inflammatory response, leading to the formation of tubercles. These small round lesions eventually rupture, allowing the bacteria to spread through the bloodstream to other organs.
Examples of tuberculosis spreading to other organs include miliary tuberculosis, which occurs when bacterial cells invade pulmonary capillaries and are then disseminated through the bloodstream to other organs.