This week: How COVID-19 may also alter your personality; cases surge as a new year approaches; why variants like Omicron will keep emerging; how to use testing to stay safe; the images and stories that defined 2021.
One day this week, the U.S. reported an astonishing 582,000-plus new cases. Compared to two weeks ago, hospitalizations are up 19 percent. The number of people who have died from COVID-19 in the U.S. now exceeds 822,000.
It was supposed to be a triumphant year—the year we defeated COVID-19. Instead, 2021 was another roller coaster ride. New vaccines spurred optimism and reopenings, but immunization efforts were plagued by misinformation and shortages.