Andrea: You have no idea what it is, do you?
Edwin Jenner: It could be microbial, viral, parasitic, fungal.
Jacqui: Or the wrath of God?
Edwin Jenner: There is that.
Andrea: Somebody must know something. Somebody somewhere.
Carol: There are others, right? Other facilities?
Edwin Jenner: There may be some. People like me.
Rick Grimes: But you don't know? How can you not know?
Edwin Jenner: Everything went down. Communications, directives... all of it. I've been in the dark for almost a month.
Andrea: So it's not just here. There's nothing left anywhere? Nothing? That's what you're really saying, right?