The MICs of evernimicin at which 90% of Borrelia burgdorferi patient isolat
es were inhibited ranged from 0.1 to 0.5 mug/ml. Evernimicin was as effecti
ve as ceftriaxone against B, burgdorferi in a murine model of experimental
Lyme disease. As assessed by culturing the urinary bladders of infected C3H
mice, no live Borrelia isolates were recoverable following antibiotic trea
tment.