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.
Home Respiratory Precautions for Patients with Potentially Infectious Tuberculosis. Information to help prevent the spread of tuberculosis (TB) for patients who are potentially infectious. Your tests show that you may have the kind of tuberculosis (TB) that can spread to other people.