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.
When you take a TB test, it takes about 48 hours to see if its positive or not. If a wheal (bump) forms and its itchy, DON'T scratch it, its really bad for the skin if you do.If its positive, you don't need to keep doing the TB test in the future, just the chest x-ray. Chickey Â· 6 years ago. Thumbs up.hen you take a TB test, it takes about 48 hours to see if its positive or not. If a wheal (bump) forms and its itchy, DON'T scratch it, its really bad for the skin if you do. If its positive, you don't need to keep doing the TB test in the future, just the chest x-ray. Chickey Â· 6 years ago. Thumbs up.