Kyle Busch's Death Certificate Unpacks Pneumonia-Driven Sepsis Tragedy

Kyle Busch died at 41 on May 21 after severe pneumonia progressed to sepsis, according to his death certificate; the document describes a chain of events beginning with bacterial pneumonia, lasting days or weeks, followed by sepsis for about a day, which led to disseminated intravascular coagulation and hemorrhagic shock, with the NASCAR star making a public appearance days earlier and posting a tribute to his son on Instagram.