In iZombie, it is discovered that zombieism is transfered by body fluids and that virus is so extreme that even condoms can't stop it.
I have two questions
- Why saliva does not count (there are cases of humans and zombies kissing)?
- There are married couples where only one of them is a zombie and it seems unprobable that these couples don't do sex. So how come only one of them is a zombie?