In which part of the body does the infectious disease tuberculosis normally begin?

Explanation

Tuberculosis is an infectious disease caused by various strains of mycobacteria. Tuberculosis usually attacks the lungs first but then spreads to other parts of the body through the blood. It is spread through small droplets in the air when people cough, sneeze, or speak. Tuberculosis is the most common lethal infection in the world today. It is estimated that a new person is infected every second.