A sign on the door of a coffee shop in Manhattan asks for proof of vaccination and the wearing of a mask on the day that a mask mandate went into effect in New York on December 13.
Mandatory Credit: Spencer Platt/Getty Images
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Between Christmas and New Year's, doctors expect the US Omicron surge to grow
Covid-19 numbers keep soaring as Christmastime travelers scatter back across country and Americans prepare for another holiday weekend.
