This is what happens in places like LA when they’ve jammed 25+ million people into about 100x45 mile wide corridor. Too many rats in the cage can cause problems.
This is what happens when they make stuff up.
Yep! There’s a reason we limit the number of cattle per section. Look at Chronic wasting disease and see how fast it travels when you have high populations of deer in small area’s. The high fence ranches are especially vulnerable to fast transmission of disease.