Ghost in Hospital?

This video posted by Mexicantony at youtube.
He received this video through his phone, this was apparently filmed in a hospital somewhere in South Mexico. Most have claimed this to be a purposeful hoax but we really won't know.

Some people in this world are naturally horrible cameramen, so implying that the person filming should have looked right is redundant. He obviously looked left first because THEY KNOW there wasn't any place for someone to enter the room on that side. They were confirming where it had come from on the left side. I don't know honestly whether it's genuine but its freaky nonetheless, Enjoy!