How come the water is not infected?

[wooly]

Not canon per the story revealed so far, but thinking logically - the aftermath of their indoor battles had to have been gory messes, blood and goo sprayed everywhere. Yet the cleanup crew is never infected. What are the odds that not one of them touched wet blood during cleanup? Pretty slim. I've worked in and then cleaned up many a nasty trauma room at work in the ER. No matter how careful, eventually you get some on you. And that is wearing a full splash gown, mask, hood, boots and gloves. What do our survivors have? Street clothes, gloves and mops? One more indication of a short interval for exposure risk.

In one of the flashback scenes, Chapter 4?, a man comes in direct contact with blood on his skin and doesn't change. I don't say much but what's already there....