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.
If you have recently been infected with TB bacteria, your TB skin test reaction may not. be positive yet. You may need a second skin test 8 to 10 weeks after the last time you. spent time with the person with TB disease.his is because it can take several weeks after infection for your immune system to react to the TB skin test. If your reaction to the second test is negative, you probably do not have TB infection. TB blood tests TB blood tests use a blood sample to ind out if you are infected with TB bacteria.