Needle-free COVID-19 vaccines making progress | DW News - latest news and breaking stories | DW | 29.07.2022

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Needle-free COVID-19 vaccines making progress

What's the first thing you think of when you hear the word "vaccine"? Most of us imagine rolling up our sleeves for a shot in the arm. But many researchers believe there's a better way to provide protection against COVID-19. And it doesn't involve a needle.