Mark Gongloff, Columnist

Of Course There’s a New Virus Variant, Because 2020

One more thing to worry about, though there’s no reason to panic.

Keep calm and mask on.

Photographer: Alex Davidson/Getty Images Europe
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For months, human scientists have been busy working on vaccines to fight the novel coronavirus that causes Covid-19. But the virus has been a busy little scientist, too, constantly working on new and better ways to infect humans.