[He looked confused for a split second when she said 'your welcome', uncertain what she was saying it in response to. He quickly dismissed it, however.]

Most of the dead I've seen rise haven't waited too terribly long before getting back up, though the biological waste explanation would certainly explain why a lot of people started raising at once when we hadn't been before. And once we already rose, I do believe the rotting...well, I think the brains helped with that.

[He seemed a bit awkward and embarrassed bringing up the brains.]