One alarming development reported in New Jersey by an active organization, was the report from an autopsy, the subject volunteered his body for its study, found that though it was thought to have been treated and "cured" a large number of the spirochetes were found in the 50s year old male's heart muscle where they were "hidden" from normal testing as used. It was almost like the scary "heartworm" that sometimes attacks pets, though those are much much larger, if you've ever seen the examples at the veterinarians. Which by the way thanks to a courageous woman who collected "Lyme disease" symptoms from animal vets went on to show that it is also present in California.
It's thought that it's vector had come from the raising of sheep on the then cleared off Nantucket Island, MA and had been known to locals as a sheep carried illness in Scandinavia. The sheep landed in Connecticut are thought to have been the carriers. An experiment with tiny parasitic wasps, natural predators of ticks, was conducted in the 1930s on "No-mans Island" and showed a reduction of the tick population of 50%.
My own personal reaction was to show the interns at St. Luke's-Roosevelt Hospital ER, where a flower arrangement is placed every day in memory of George Balanchine, American choreographer as a favor to my doctor and later experience an extreme case of itching that a saw a dermatologist for and hope I have gotten it out of my system now twenty years later. It helped explain a previous "we don't know some sort of blood infection" I was treated for twenty years before 1989 while in high school on Long Island. Others have voiced their multiple contacts with it in prior contacts. I have also read that they think native Americans have developed an immunity to it evidenced in the study of very old bones found in Louisiana.