Herd immunity, mask confusion and a nudge for the vaccine hesitant

This hour, worry that we won't reach herd immunity as vaccine demand slows, the confusion about new CDC guidelines for the vaccinated, and using a nudge for vaccine hesitant.

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People move along the Schuylkill River Trail

People wearing face masks as a precaution against the coronavirus move along the Schuylkill River Trail as tree blossoms with spring colors, Wednesday, April 14, 2021, in Philadelphia. (AP Photo/Matt Rourke)

There is a lot of good news around COVID in the U.S., new infections and deaths are dropping daily, but there’s also growing concern that the slowing uptake in vaccinations could mean that we might never reach herd immunity. And for people who are vaccinated, the new CDC guidelines around mask wearing and activity risk is creating a lot of confusion. We start off our hour talking with public health physician DR. LEANA WEN about why the new recommendations are confounding people, how to think about risk once we are vaccinated, and where we stand in the fight against the coronavirus. Then, we’ll talk with Wharton School’s KATY MILKMAN about how to nudge the hesitant to getting vaccinated. We’ll look at her research around health messaging, whether the carrot or stick works better, and about her new book, How to Change: The Science of Getting from Where You Are to Where You Want to Be.

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