Most of Us Have Had Covid

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?

Guest: Apoorva Mandavilli, a science and global health reporter for The New York Times.

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Background reading:

• Sixty percent of Americans, including 75 percent of children, had been infected with the coronavirus by February — another remarkable milestone in a pandemic that continues to confound expectations.

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