some of the recent research from Dr Zhang's group provided compelling evidence for the following combinations being able to completely eradicate bart - including persister - in vitro
from what i am reading in the LLMD's and patient accounts - this seems to be transferring pretty well to clinical practice
Results
We evaluated 14 antibiotics and 25 antibiotic combinations for activity against stationary phase B. henselae (all antibiotics were at 5 μg/ml) and found that ciprofloxacin, gentamicin, and nitrofurantoin were the most active agents, while clofazimine and miconazole had poor activity. Drug combinations azithromycin/ciprofloxacin, azithromycin/methylene blue, rifampin/ciprofloxacin, and rifampin/methylene blue could rapidly kill stationary phase B. henselae with no detectable CFU after 1-day exposure. Methylene blue and rifampin were the most active agents against the biofilm B. henselae after 6 days of drug exposure. Antibiotic combinations (azithromycin/ciprofloxacin, azithromycin/methylene blue, rifampin/ciprofloxacin, rifampin/methylene blue) completely eradicated the biofilm B. henselae after treatment for 6 days.https://www.ncbi.nlm.nih.gov/pmc/articles/pmc7149919/clarithromycin was not tested - but is often preferred clinically - as seems more effective and perhaps less likely to cause resistance than azithro. Clarithromycin is also more active for lyme i believe - so a good choice if lyme and bart both present