Nythedra Infested debuff

Is Nythendra was a source for debuff Infested always?

I wanna see who take stacks from Infested ability not from boss(was splashed with another people with Rot)
in range from type = "applydebuff"...
in range from type = "applydebuffstack"...
but with all this filters Nythendra was a source.

Try Problems -> Avoidable Damage panel -> Rot tab. According to it:

The table to the left shows who got splashed by Rot, and the table below shows which players did the splashing.