The line is a fair bit nebulous from what I have seen. In Origins (only play the OG games new ones do not have passion behind them.) all of Richtofen's men turned into Zombies but he survived somehow. Even though he had more exposure than anyone else. By virtue of that fact shouldn't he be a zombie before anyone else? What determines who comes down with 115 related symptoms and who just straight up becomes a zombie?
Is there an in-lore reason some people do and some do not become zombies? Same with Ultimis Richtofen why are all his men zombies and he is fine. Is it Dr. Monty or is it just plot armor? Is zombifacation spread via bites or 115 exposure? In origins it was bites but in others, it's just the 115 like in Shino Numa (typo) it wasn't or did it reanimated the corpses?No idea some help would be nice. Does it reanimated corpses at all?