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.
Ten thousand cases of breast and bowel cancer could be prevented each year if more of us took a brisk walk every day. Just 45 minutes of daily activity at a moderate level could prevent about 5,500 cases of breast cancer a year in the UK.