Non know strains

Ofcourse evolutionary forces are at work.
Here in Australia officially the Medical profession may be on the edge of recognising we have a "lyme-like" illness while they deny that lyme as you may know it in America is not known here. It is just their testing procedure. The Lab testing standards leave it undetected.
You still get a bulls-eye rash and you can still hit the bugs with standard treatments.
While that means the testing may not work in your favour what counts is that the treatments still prevail.
That is my understanding of it.