How come the water is not infected?

[yarri]

This might be a lost cause trying to fight the creator on this but like wooly said, these zombies kill by tearing humans apart limb from limb using teeth fingers anything, and the victim isn't exactly gonna sit there and take it are they? They'll fight back. The result would be one giant bloody mess but the victim is killed before he gets a chance to turn (2-3 minutes?) anyway there's a giant bloody mess of a corpse, we know zombies drool and salivate like mad when they have the scent of a human so there SHOULD be a transfer of fluids/blood between victim and zombie, and this SHOULD be the case for almost every body in that pile. So all together a good bit of zombie toxin should have been in and around those bodies, I'll guarantee u angel n Riley got goo in heir mouths and eyes, so the way I see it, had the virus been active outside the host body, Rigel (Riley/angel) shoulda turned.

But that could totally not be the case in which case PLOT HOLE! TAN TAN TAAAAAAAN!

Most virus are fragile outside the hosts body.(HIV will last on a surface outside the body 1 to 2 hours and I got that from the CDC)
Yes the concentration of a virus in saliva is present in things like HIV infection. So it stands to reason that it would be with the Zvirus But the chance of infection is low and as the mouth is an unfriendly place to any virus in general. Blood (zombie blood) would have a higher level of concentration of the Zvirus then Zombie spit. Much higher.

Just for fun facts
[quoted from Wiki] Human saliva is composed of 98% water, while the other 2% consists of other compounds such as electrolytes, mucus, antibacterial compounds, and various enzymes.[1] As part of the initial process of food digestion, the enzymes in the saliva break down some of the starch and fat in the food at the molecular level.

The pile of nummy zombie treats that Riley and Angel rolled around in was not fresh meat. It was well aged, soft and gooey. I would say more a possibility for bacteria infection then ZVirus infection.

Also.. to answer the part about victims putting up a fight prior to their visit to the food prep portion of the arena.. I don't buy it. 1. Zombies are much stronger then humans. Note here I didn't say superhuman but I would say at least chimpanzee strong as they ripped apart a Saul's car and an adult chimp can rip apart a human being
2. They also are working in pairs or some other multiple. I think they rip "food people" apart in pairs.. Like a big game of tug o war. Also, to disjoint an animal you don't have to break bones you only have to break tendons and dislocate (which isn't hard to do) joints. its something like 8 to 14 pounds of pressure on an average human to dislocate a joint)

Last part:
My question

Could the drooling in Blood, sweat, and fears been not only from the scent of humans but from the zombies being triggered to hunt?