Three in five Americans have been infected. What does this mean for immunity and for the future of the pandemic?
This week, the Centers for Disease Control and Prevention released new data that showed around 60 percent of Americans — more than half of adults and three quarters of children — have now been infected with the coronavirus.
But herd immunity looks likely to remain elusive, and many people are still at high risk from Covid-19.
What do the C.D.C. figures mean for immunity in the United States, and for the future of the pandemic?