In a special edition of the "First Opinion Podcast," STAT executive editor Rick Berke and senior writer Helen Branswell interviewed the country’s former top infectious disease expert about some of the insights and revelations from his new memoir, "On Call: A Doctor's Journey in Public Service." Conversation topics include when Fauci knew that Covid-19 was a real threat; when AIDS activist Larry Kramer called him "the consummate manipulative bureaucrat" in an interview with STAT; how quickly national health risk can skyrocket when it comes to pathogenic viruses; and which former president Fauci has the most affection for.