If you’re 35 or younger, your genes can predict whether the flu vaccine will work
Researchers still searching for a similar genetic ‘crystal ball’ for older adults
![person getting a flu shot](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2017/08/082417_AC_flu-shot_main_FREE.jpg?fit=860%2C460&ssl=1)
FORTUNE TELLER A set of nine genes can signal whether a young adult will develop a strong response to the flu vaccine, a new study finds.
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