There was little focus on the actual kids, if that makes sense. I would have like to see them featured more, rather than seeing everything from the adults point of view. I did not find ANY of the adults likeable or relatable. Everything just seemed so over the top. I think the first part started off strong but once they came back...? Nope. No one was in disbelief. None of the parents were in denial that it was their kid. Since the characters weren't likeable and there was little focus on the kids, I couldn't connect and didn't care about them. I thought that people severely overreacted and should have let those little zombies stay asleep.
Probably would have been good to include a few (intentionally) childless couples or even see the perspective of some kids who just hit puberty. What about the families with kids of a broader age range? Did they go berserk as well?
Also, 4o days spent with rotting human flesh cannot be good for the senses. The smell must have been awful. Maybe I just need to relax and not think too much. Why did the world shut down? I don't get that. Lastly, they are kids. Even though they lose their humanity, they are still kids in kids bodies. They should not be overpowering any adult. As long as you have the power to kick a soccer ball, you should be winning. lol