However, if your visa says that it is valid indefinitely, you should apply for a new visa, or travel under the Visa Waiver Program (VWP) if eligible as all indefinitely-valid visas are now obsolete. See further down this page.
Actually, no. You can't get TB by touching an infected person. Tuberculosis germs don't stick to clothing or skin; they hang out in the air. You also can't get TB by: 1  Giving an infected person a hug or a kiss. 2  Using the same toothbrush.3  Eating or drinking after an infected person.ou can't get TB by touching an infected person. Tuberculosis germs don't stick to clothing or skin; they hang out in the air. You also can't get TB by: 1  Giving an infected person a hug or a kiss. 2  Using the same toothbrush.
An Introduction to the Causes of Tuberculosis. The cause of tuberculosis (TB) is a bacterium called Mycobacterium tuberculosis. This bacterium usually attacks the lungs. However, it can attack any part of the body such as the kidney, spine, and brain.If not treated properly, TB can be fatal.TB was once the leading cause of death in the United States.B is spread through the air from one person to another. The bacteria are put into the air when a person with active TB of the lungs or throat coughs or sneezes. People nearby may breathe in these bacteria and become infected.