Lowering Covid-19 cases is ‘best thing’ US can do to improve chances that vaccines will continue working, expert says

lowering-covid-19-cases-is-‘best-thing’-us-can-do-to-improve-chances-that-vaccines-will-continue-working,-expert-says

Lowering Covid-19 cases across the US isn’t only critical to helping prevent another surge fueled by variants — it also makes vaccines more likely to continue working effectively against mutations, one expert says.

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