YAHOO Oct. 21, 2021

Delta's surprise U.K. comeback is a warning sign for the U.S.

When it comes to COVID-19, what happens in the United Kingdom rarely stays in the United Kingdom — and that, in turn, rarely bodes well for the rest of the world.

Again and again, the U.K. has previewed the next unwelcome phase of the pandemic. The highly transmissible Alpha variant was first identified in Kent.

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