Earlier quoted context omitted.
There is evidence that syphillis came from the Americas. There is evidence it was introduced to the Americas by Europeans. One problem is that it's hard to distinguish teritiary syphillis from tuberculosis or leprosy on bones. As for Borreliosis, there are many variants of it endemic to Europe and spread by ticks. No evidence that it came from the Americas. Neither of those spirochetes are zoonotic.
Why is a tic biting a human and transferring Borreliosis not considered zoonotic?
I had never heard the term until today, so take the claim with a pinch.