Fifth & Mission

As scientists race to understand newly discovered mutations of the coronavirus, Erin Allday explains how they might change the trajectory of the pandemic. Plus: Aidin Vaziri shares some practical tips we can all take to protect ourselves. | Unlimited Chronicle access: sfchronicle.com/pod Have you listened? Chronicled: Who Is Kamala Harris?: podfollow.com/chronicled Learn more about your ad choices. Visit megaphone.fm/adchoices