"I shouldn't be this affected. I wasn't even the one it happened to." If you've ever thought something like this, you might be carrying vicarious trauma and the fact that you're minimizing it is actually part of the pattern.

Burnout sounds like something that happens when you work too hard for too long. But if rest hasn't touched the real problem, there might be something else going on. It could be moral injury, and it responds differently than burnout does.