In vitro susceptibility testing of four antibiotics against Borrelia burgdorferi:: a comparison of results for the three genospecies Borrelia afzelii, Borrelia garinii, and Borrelia burgdorferz sensu stricto

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).