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.
How to Prevent Arthritis. The fact is, there is no sure way to prevent arthritis. But you can help to prevent, that is, reduce your risk, and delay the potential onset of certain types of arthritis. If you have healthy joints right now, do all you can now to maintain mobility and function and avoid the pain and disability associated with arthritis.