Summary: The pause on one of the country's three vaccines comes at a bad time as everyone 16 and up becomes eligible to get shots this week in California. Reporter Erin Allday talks about why it happened, what it means for the race to herd immunity, and whether it might delay Gov. Newsom's plans to reopen the state's economy in June. | Unlimited Chronicle access: sfchronicle.com/pod Learn more about your ad choices. Visit megaphone.fm/adchoices
