Well I don't think Scratch Killed the real angel. With burns all over his body Identification of him wouldn't of been possible...(Angel is my favorite Character). At least I hope. Im wondering how long Tanya was bitten, If the military had blood tests between zombies and Human im sure there would be some form of infection, even if it isn't a zombie bug, the blood would have SOME discrepancy. Im assuming that most infections would manifest, even ones that do not pose a threat when your alive, you body in my opinion would light up like a christmas tree. Full of diseases that the body can no longer defend against. But I'm loving the story line! lol