Ever since I got spoiled Shane got killed off in the comics, and then got spoiled because people decided it was cool to tell us about two upcoming characters who also play a similar role to the TV show's Shane, I knew he'd die. I agree his role is needed and it will be filled... hopefully by a better actor.Does anyone still think Rick put a bullet in the fat guy's head to keep him from coming back as a zombie? It was a kill shot, and in rapid succession to the two, non-fatal shots he put in his torso. Glad that is now put to rest as he would've done the same to Shane tonight. Most likely, the CDC guy told Rick about Lori's blood test showing she was pregnant. I'm sure they could put a twist in way down the road if they never cover it, but it seems that's the answer right now.
I could only see two things a blood expert might feel the need to tell Rick at that point, and one theory is now totally debunked.
Awesome episode. Darabont was all wrong for this show, and it's totally clear now. The wrap-up of this season has been tremendous after a terrible first half, and hearing about his thwarted, other ideas, I'm glad the constrained his "creativity."