Years ago my wife and I and our two young kids were visiting our families. The others came down with the flu, and lay about in misery in the hotel room for days. But I had had a flu shot, and stayed well, which convinced me to get a flu shot every year since. While I’m generally a med skeptic, I’ve figured we can see at least a few identifiable areas where med seems most worth the cost, including infant care, trauma care, and vaccines. So even I’m surprised to see just how weak is the case for flu shots.