Tuberculosis is transmitted through which route?

• A. Inhalation
• B. Ingestion
• C. Direct Skin Contact
• D. Blood Contact

Answer: (A)

TB spreads via inhalation of tiny respiratory droplets containing the bacteria when an infected person coughs, sneezes, talks, or sings. These droplets can stay suspended in the air and travel in enclosed, poorly ventilated spaces, so inhaling them allows the bacteria to reach the lungs and establish infection. That respiratory route is why TB is classified as an airborne disease and why the lungs are the most commonly affected site. Ingestion, direct skin contact, or blood contact are not typical pathways for TB transmission, because the bacteria must be breathed in to reach the lungs and begin infection.