Backed by funding from the Lyme Research Alliance, Dr. Kim Lewis has found Lyme persister cells in humans post treatment. That should be front page news, imo.
Current mainstream approaches to diagnosing and treating Lyme are disturbing in many respects, not the least of which was reported by Pam Weintraub that some early definers of Lyme bifurcated late symptoms into major and minor, and decided that once the major symptoms are resolved, the patient is cured. Included under major symptoms are issues such as the rash - the rash that almost invariably is not painful or itchy, and resolves on its own - and arthritis.
Minor symptoms? Severe fatigue, arthralgias, tachycardia, profound cognitive difficulties(we can be talking IQ declines of 10 or 20 points, or even more), and facial palsy - no matter how disabling.
I should add that a purported result of this "split" of symptoms was an increase in cure rates. Individuals still burdened with sometimes profound "minor" symptoms were said to be afflicted by either immune system irregularities (post infectious), or afflicted with something entirely unrelated to Lyme.