At one point during The Daily’s February 27 podcast, Michael Barbaro asked his guest and New York Times colleague, Donald G. McNeil Jr., how many epidemics he’d covered.

SARS, MERS, bird flu, 2009 swine flu, Zika,” McNeil began. “Dengue and chikungunya didn’t really become epidemics. And also I’ve covered H.I.V., although that started long before my time as a health reporter. And seasonal flu. Have I forgotten anything? That’s enough, right?”