Given how genes have a hand in practically every health issue, it should be no surprise that studies are starting to show that not all people are the same in terms of how well a vaccine works. But a recent study examining responses to influenza vaccine does more than just tell us how to know who should feel more at ease after getting their seasonal flu shot. It actually suggests a tactic for intervening at the genetic level in those who are not good vaccine responders. At the same time, it lays the groundwork for personalizing preventive treatment, not just of flu, but also a host of other conditions.
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