I'm loving every bit of this show. I recently bought Volumes 1-5 of the graphic novel, and it's really interesting seeing all of the similarities and differences between the two. Up until that last episode I thought they were going to follow pretty close to the comics, but then they just went on a completely different turn with that whole CDC thing. If you're enjoying the show I would definitely recommend checking out the comic, it's extremely entertaining, well written, and super addicting. I found myself just flying through each volume.
All in all, this is turning out to be one of my favorite new shows, and it's already been renewed for a longer second season so I couldn't ask for more. The acting is top notch, the effects are great and I can't wait to see where they take the show in this finale and into Season 2.