Jim and Maeve answer listener vaccine questions and are joined by Alexis Madrigal, who explains the apparent plateau in cases (and why he’s begun to worry despite his longer-term optimism). With the COVID Tracking Project winding down, Madrigal also offers insight about where to get the best data. Support this show and all of The Atlantic’s journalism by becoming a subscriber at theatlantic.com/supportus. Learn more about your ad choices. Visit megaphone.fm/adchoices