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Repost: The world needs Covid-19 vaccines. It may also be overestimating their power

May 26, 2020 by Stephen Tauber

With a little luck and a lot of science, the world might in the not-too-distant future get vaccines against Covid-19. But those vaccines won’t necessarily prevent all or even most infections.

In the public imagination, vaccines are often seen effectively as cure-alls, like inoculations against measles. […]