Fuzzy Math:"Why Swine Flu Vaccines Don’t Add Up"

Here’s a seventh grade word problem for you: If swine flu has infected one million people and killed 500, how many people might be expected to die if it infects 150 million people (assuming no major changes in the virus)? The correct answer, of course, is 75,000 people, and that’s within the range of the number of swine flu deaths now being publicly predicted by the White House.
But there’s another part to this word problem: How many vaccine shots and hand washings does it take to boost vitamin D levels in the average person...