Doc E in NJ (specializing in tick-borne co-infections of bart and myco, published)..says sometimes depending on what abx you have been on, or even sometimes as the nature of the disease..
he will get repeated negative blood pcr's and also negative antibody tests, only to have bartonella (and/or mycoplasma) show up in the spinal fluid.
It can become encapsulated in the CNS.
(btw, in his experience, though not formally studied, he has also found that IV Claforan is effective against both bart and lyme cns infection)
In our experience with myself and my son, as well, all our treating LLMD, LL neuro, and Doctor Jones, ect. suspected bart strongly as neurological symptoms got worse while in treatment for Lyme.
(in our cases it was noted that long term zithromax at high doses may have contributed to 'driving bart' into the cns)
They tested his spinal fluid and didn't find the DNA, but also expected there was a good chance they may not pick it up in the testing specimin, and treated for bart anyway with Rifampin. It may not be worth tapping the patient if the Docs will treat for bartonella empirically and watch for response, and if response indicates infection..continue therapy long enough.
The yeild is low in pos cns pcr, tho - in many cases it has been found, which goes to show it can be there when not found in the blood.
One of the initial improvements on the drug was that he too became much more lucid..
a return of his personality.
Improvement continued from there. He was on 300mg 2x a day..for a year and a half.
Rifampin is given a minimum of 9 months in children with TB, and requires longer tx at a high enough dose I believe in cns bart/lyme infections.
Some Docs are skiddish of the drug, but those with experience (and TB Docs) know it can be a safe therepy as long as liver functions are monitored once a week, every two weeks at the least.
Best,
Mo
[This message has been edited by Mo (edited 16 June 2005).]