Intro

Fully vaccinated people can ditch the mask outdoors, the Centers for Disease Control and Prevention said this week — unless they're at a crowded event. Dr. Anthony Fauci explains the new guidance to NPR and weighs in on how soon children under 16 might be eligible for vaccines.

NPR's Joe Palca reports on the scientific effort to learn more about how long vaccines protect us.

Additional reporting in this episode from NPR's Allison Aubrey.

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