salks katalin karikó rossi karikós moderna toddlers longshot heath jonas rna derrick expelled riddle institutes barney polio timed messenger eclipse hang foresight wuhan 1918 leveraged perfectly listeners coronavirus graham

feat 1966 dismissed overcame luck prepare breakthrough solving vaccines vaccine obstacles discoveries obsession theres sparked reported struggled countless 1990s emerged largely worst 19 meet needed died investigative covid

hours pandemic crucial start groundbreaking trial tragedy importance eventually definitive job tell possible draws hundreds unprecedented china head really scientists david course medical journalist group create critical begins