From: airtamis | #007 I don't think so, but I'm pretty sure that it does void Ghost.
I had one body found in the first level but I still got ghost for it.
I got the Shadow trophy and I had bodies found.
Weird then I have no clue what I did wrong, I did all the levels, didn't kill anyone (At least according to the game) unless there are some really technical areas where like not preventing someone from killing a person counts towards the trophy's kill count but not the games. (I did prevent the first level's situation of that happening though)