News this summer of a flu vaccine patch sparked a lot of chatter. Could getting vaccinated be as easy as putting on a bandage? Could there be fewer, or at least smaller, needles in our future?
Some companies and academic labs are working to make those things happen.
They're refining technologies that involve tiny needles, less than a millimeter long, and needle-free injectors that can send a dose of vaccine through your skin in a fraction of a second.
Some of these technologies are already available on the market, while others are still being tested.