"TB" stands for <em>"Tuberculosis."</em> It is a disease which is caused by a bacteria called<em> "Mycobacterium tuberculosis." </em>
An individual with a latent TB infection means that<u><em> he has TB yet is not showing symptoms from it.</em></u> The person doesn't feel sick–which means, <em>no night sweats, chills, fever and inflammation.</em> He will also have no cough nor will he feel fatigued. However, if a skin test will be done on him, he will have a positive PPD <em>(Purified Protein Derivative). </em>This is because he has the bacteria in his lungs, but they are <em>"not active."</em>