I have tuberculosis before four years. And I was...

What is TB?
Tuberculosis (TB) is a disease caused by a germ called Mycobacterium tuberculosis that is spread from person to person through the air. TB usually affects the lungs, but it can also affect other parts of the body, such as brain, kidneys, or spine. When a person with infectious TB coughs or sneezes, droplet nuclei containing M. tuberculosis are expelled into the air. If another person inhales air containing these droplet nuclei, he/she may become infected. However, not everyone infected with TB bacteria becomes sick. As a result, two TB-related conditions exist, latent TB infection and TB disease.

What is Latent (inactive)TB Infection?
Persons with latent TB infection do not feel sick and do not have any symptoms. They are infected with M. tuberculosis, but do not have TB disease. The only sign of TB infection is a positive reaction to the tuberculin skin test or TB blood test. Persons with latent TB infection are not infectious and cannot spread TB infection to others.

Is inactive TB contagious?
Inactive TB is not contagious and cannot be spread to others. TB can only be spread when inactive TB becomes active.

A person with latent TB infection:

• Usually has a skin test or blood test result indicating TB infection
• Has a normal chest x-ray and a negative sputum test
• Has TB bacteria in his/her body that are alive, but inactive
• Does not feel sick
• Cannot spread TB bacteria to others

Recommendation:
At the moment, you need to be reassured as you have got the treatment under medical supervision and you have stopped then by medical order, so nothing to be worried about regarding your health.