Poorer nations are 'perilously at risk' as delta variant spreads. Can the U.S. help?

More than 4 million people have officially died from COVID-19 globally, but the actual number is almost certainly much higher. As wealthy nations with high vaccination rates like the U.S. begin emerging from the pandemic, the disease is accelerating in parts of the world. Nick Schifrin begins the report, and Jennifer Nuzzo, an epidemiologist watching the delta variant closely joins Judy Woodruff.

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