Prognosis
CDC Backs Adult Boosters; Europe Tightens Curbs: Virus Update
Police on patrol on the first day of a nationwide lockdown for unvaccinated people, in Innsbruck, Austria, on Nov. 15.
Photographer: Jan Hetfleisch/Getty Images
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Covid-19 booster shots from Pfizer Inc. and Moderna Inc. received unanimous backing for use in all U.S. adults from public-health advisers, clearing the way for millions to gain additional protection before the threat of a winter surge.
Michigan issued a mask advisory on Friday to combat the steepest rise in new cases in the U.S. Philadelphia expanded its vaccine mandate to all public employees and contractors.