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The first global vaccination

Was distributed by 22 orphans. Transcript at vox.com/todayexplained. Learn more about your ad choices. Visit podcastchoices.com/adchoices

Om Podcasten

Today, Explained is Vox's daily news explainer podcast. Hosts Sean Rameswaram and Noel King will guide you through the most important stories of the day. Part of the Vox Media Podcast Network.