Fall is officially here, and that usually means three things: pumpkin-spiced everything is back in style, our lush trees are about to become leafless sticks, and that sniffle and cough could be your warning that flu season is upon us.While you've been busy enjoying the summer and taking vacations, drugmakers and researchers around the world have been gearing up by creating vaccines designed to improve your quality of life during the 2017-2018 flu season.