The sharing of saliva is an interesting point. I'm no biologist so I may be incorrect, which is nuthin new, but don't deer tend to stay in family groups so to speak?
So you've got a family group that licks and grooms each other, let’s assume they are disease free. Now let’s say a young buck gets dispersed from his area and he has CWD or Tb. He wonders into the range of the family group in question, takes a lick of a mineral pile, continues to wonder around licking various mineral piles in a 5 mile radius. How many family groups are in that area that use mineral licks? One of the family groups uses the lick, moves to groom her fawn or another family member and there it gets spread.
Now if that infected buck ate a piece of clover here or a turnip there, just sort of browsing as deer do, the chances of an uninfected deer eating from the same piece of clover or the same turnip is pretty low, but the chances of licking from the same mineral pile is pretty high.
I guess I’m saying deer do swap spit like high schoolers at the prom, but they would have to get infected from some where and it would more than likely be from a mineral/bait station than just normal grooming/browsing.
There has to be a “ground zero” and it is gonna be an infected deer licking from a mineral site/bait station, not from that dispersing deer grooming another deer.
The ‘Bonker