The de­ci­sion by the FDA on Wednes­day to re­verse course and re­view Mod­er­na's flu vac­cine ap­pli­ca­tion was the re­sult of a meet­ing Tues­day be­tween an un­usu­al group of se­nior FDA lead­ers and Mod­er­na, with the FDA lead­ers walk­ing back their boss’ over­rul­ing, ac­cord­ing to two sources fa­mil­iar with the meet­ing...