Hey Secret History fans! We thought you might like this episode of What Next: TBD. What Next is Slate’s daily news show. And every Friday, What Next: TBD turns the news of the present into a glimpse of what tomorrow holds. From fake news to fake meat, augmented reality to MRNA, in each episode host Lizzie O'Leary talks to an expert about the technology that’s reshaping our world.

In this episode: The Biden administration says a third dose of vaccines for all American adults will end the pandemic faster. And experts say there is evidence of waning vaccine effectiveness against mild-to-moderate disease. But globally, what’s the best use of the next available dose?

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Guest: Saad Omer, director of the Yale Institute for Global Health.

Host: Lizzie O’Leary

This episode was produced by Alyssa Edes.

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What Next: TBD: Will Booster Shots Make a Difference? 21:52 Share

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What Next: TBD: Will Booster Shots Make a Difference?