Nelly says Kevin Durant's positive coronavirus test is a real REALITY CHECK for the world -- because it proves "nobody's exempt" when it comes to COVID-19.
"Our thoughts and our strengths are with him," the hip hop star told us in Calabasas ... "Nobodys exempt. We're all the same right now."
He added, "Nobody's bigger than the other right one. I think we're all one at the same time right now."
"It's affecting the world man, not just the music industry. And anybody who feels like this is personal, basicaly got they head in the sand.