What Causes Tuberculosis? Mycobacterium tuberculosis Transmission and Treatment

Tuberculosis (TB) is caused by Mycobacterium tuberculosis, a bacterium that primarily attacks the lungs but can spread to the brain, kidneys, spine, and other organs.

Transmission

Airborne droplets from coughing, sneezing, or talking by someone with active TB. Close, prolonged contact increases risk. TB is not spread by touch, sharing food, or drinks.

Treatment

Early detection and a full course of prescribed antibiotics (typically 6–9 months) usually cure TB. Completing treatment prevents complications and stops transmission.

Source: World Health Organization, 2023.

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