My opinion on fibromyalgia is controversial, but it is backed by some evidence.
Most people with this condition have infiltrates in whole blood, and cultures generally reveal mycoplasma spp quite readily.
I am venturing to assume other nano-type L-forms are detectable if a full analysis were to be conducted.
How and why these stealth organisms have become so prevalent?
It all goes back to bioweaponeering of the 1960s and 70's.
It is vectored by mosquitoes, and likely other biting insects. The organisms must have direct passage to blood.
It is possible (again, my opinion) that horizontal transfer from mother to infant may occur.
Before I am lambasted by my critics, I suggest looking into the literature on the subject first.