Causes and Risk Factors of Tuberculosis!

How Tuberculosis (TB) Is Diagnosed!
Types of Diagnostic Tests and What They Can Tell You.

Tuberculosis (TB) is a contagious airborne disease caused by Mycobacterium tuberculosis, a bacterium that grows and divides inside of cells. The infection, which starts in the lungs, causes nodules known as tubercles, or Ghon focii, which are spots left by dead infected tissue.
With time, the disease can spread to other areas of the lung and larger areas of lung tissue may die off, causing cavities. Bacteria can also spread to other organs, including the kidney, brain, and spine.