The trees weren't diseased, he just didn't like them.

Therefore, an examination would be fruitless.No - See first two questions.Bear in mind that rabies in humans is rare and most bats don't carry the disease.

Every few years there's something new that we are all going to die of....ebola, swine flu, zika virus, SARS, mad cow disease etc.

Again, not to quote Trump again but we can't let the cure be worse than the disease. 

Keep in mind, actually sending them to collections will result in the collection company getting half and you possibly seeing some money possibly in the very distant future.Going to small claims court you will be the evil rich landlord forcing possibly a deadly disease (Coronavirus) on your tenant (according to them) and your chances of winning depend on how liberal your state/judge is.

I really enjoyed listening to this Joe Rogan podcast with Michael Osterholm, who specializes in infectious diseases (seems to be extremely knowledgeable in the subject matter).As for my opinion on the housing market.

We have long known that diseases, especially viruses, can pop up from animal sources.

We should stay away from those disease infected cities going forward.

Keep in mind though that it is illegal in most locations to relocate a wild animal to avoid the spread of disease so I usually just shoot them in the trap. 

Today I received a call from a Father and Mother of a diseased Daughter who were so happy that I sent them a letter.