Kyle Busch died of pneumonia that progressed into sepsis. What to know about the life-threatening condition.

Kyle Busch died after severe pneumonia progressed into sepsis, resulting in rapid and overwhelming associated complications, according to a statement released by his family.

Kyle Busch suffered from severe pneumonia that progressed into sepsis, “resulting in rapid and overwhelming associated complications,” the NASCAR driver’s family said in a…

Busch, a two-time NASCAR champion, died at 41 on Thursday

Kyle Busch died after severe pneumonia progressed into sepsis, leading to rapid complications.