Sicklinger M, Wienecke R & Neubert U
In vitro susceptibility testing of four antibiotics against Borrelia burgdorferi: a comparison of results for the three genospecies Borrelia afzelii, Borrelia garinii, and Borrelia burgdorferi sensu stricto.

J Clin Microbiol, 41(4): 1791-1793, 2003
ISSN: 0095-1137 Journal of Clinical Microbiology (pubmed.ncbi.nlm.nih.gov)

Abstract
MICs and minimal bactericidal concentrations (MBCs) were evaluated for the four antibiotics azithromycin, amoxicillin, ceftriaxone, and doxycycline against the three main genospecies of Borrelia burgdorferi sensu lato. In MBC testing, statistically significant differences between the genospecies could be found in 7 out of 12 comparative evaluations (P < 0.05).