This gets a bit convoluted very quickly. If I were an IDSA stalwart - I am not - I would say this conversation is meaningless. Everyone who, post treatment, thinks they have Lyme, do not. At least half of those IDSA people don't believe in post-treatment Lyme disease syndrome, so that allows all the rest of "former" Lyme patients to be neatly tossed into the ME/CFS, er, stew.
So for those post-treatment Lyme patients, Rituximab should be as relevant as it is for other people suffering with ME/CFS.
Unless the IDSA and NIH and NHS and CDC and AMA have been wrong all these years.
Any volunteers to find out?