Podcast:Today, Explained Published On: Tue Apr 13 2021 Description: The US government is calling for an immediate pause in Johnson & Johnson vaccinations after six recipients (out of millions) developed blood clots. ProPublica’s Caroline Chen explains. Transcript at vox.com/todayexplained. Learn more about your ad choices. Visit megaphone.fm/adchoices Learn more about your ad choices. Visit podcastchoices.com/adchoices