The dumbass left counter to this is:

People come in via airports

people going on vacation bring these back

ground squirrels carry it (plague)

we lived with someone with TB and never caught it (there us a non transmittable variety, apparently)

Honestly, there are times when I just want you say "Fuck all y'all, go get the plague ....you are too stupid to live...."

Then I block them, at least that makes me feel a bit better.