How do you think the Zombie Apocalypse will go down?

The more and more science advances, the more and more it seems, do me at least, that some form of Zombies might be born or unborn at some point or least it could be possible to some extent.

How do you think it would happen? A mass cure injection with drastic side effects that don’t really completely point to zombification, but still change the human race into ravenous beasts? A biological weapon gone awry, with inhuman savages that only know blood lust and nothing else? The undead rising from their tombs, slow and dumb and you kind of wonder how they’re able to stand and walk?