The items you mention are mitigation tactics, they cannot eliminate the risk associated of someone carrying the disease from coming into your property. 

I'm sorry to hear about your lyme disease.

I wouldn't let them take the tree away until it's been seen.If the tree had any type of disease it will affect value.

(They will never forget)5.)DEEP - Have emotional meaning to your name6.)SUPPORTED - Providing exemplary service makes a name or service contagious.lol, the more I go on the more is sounds like a diseases.

Workers’ Occupational Diseases Act 2.

With all of the Trillions in research there has been NO major illnesses or diseases cured since the polio vaccine in the 1950's.

Then I would take a step back and reassess where things went wrong ... being broke is a symptom, not the disease IMO ... figure out what the root cause of this bad situation was/is and attack the problem at its root.

Its the equivalent of people who go to web MD then show up in the ER and tell me what's wrong w them.Everyone all of a sudden has all these rare diseases.

I have an autoimmune disease in my colon that is triggered by stress. 

For example, if swine flu or some other major infectious disease started killing millions of people, the country could come to a halt.