I wanted to like it more than I did. I didn't dislike it, exactly, but I didn't find it as compelling as The Passage.
Part of it may have been that I'm very into the apocalypse and this book didn't focus as much on people when it was first getting started and didn't focus as much on life for the general population afterward. Maybe it's just been too long since I read the first book but I didn't feel particularly invested in the characters and this book felt more limited in scope and focused on individuals than I remember the previous book being.
Again, it's not bad, just not as good as the first one. And I know it's a trilogy and I'll read the next book but I also think it could have ended here and made sense.