With the shift to AppleCare+, Genius Bar staff will no longer have the option of offering free replacements, so customers who have been aware of Apple's informal replacement policy should be mindful of the change.
Prevention of TB involves both early treatment to reduce transmission and isolation of the infected person until they are no longer contagious. There is a vaccine against TB, but it is not used routinely in the U.S. because of efficacy issues and other problems.
With latent TB: 1  You cannot spread TB to other people. 2  In some people, the bacteria can become active. 3  If this happens, you may become sick or you can pass the TB germs to someone else. 4  Even though you do not feel sick, you need to take medicines for TB for 6 to 9 months.