Some docs seems to feel that one of the main infections contributing to chronic Lyme are parasites, and possibly fungus. Below are some notes from the 'better health guy,' Scott Forsgren, about this. Some LLMDs are treating this newly-popularized bug, called fl1953 protomyxzoa rheumatica. Different docs seem to treat differently. In late 2012 I tested positive for this bug, via a blood test conducted at Fry Labs. You can read more about some treatment ideas.
Scroll down to the section about Ann Corson's talk:
Protomyxzoa rheumatica is a huge player in her patient population. It is not yet know if it is found in ticks, but it has been found in mosquitoes by Dr. Fry in Arizona. There are three references on that page. Search for the word in your browser ("find on this page", typically brought up using Ctrl-F or Option-F) or just read the section next to the photo of Ann on that page.