Table 1.

Susceptibilities of six New York State isolates of E. phagocytophila to antibmicrobials

Antibiotic MIC (μg/ml)MBC (μg/ml)
Doxycycline ≤0.1250.125–0.5
Rifampin ≤0.125≤0.125
Ofloxacin ≤2 ≤2
Levofloxacin≤1 ≤1
Trovafloxacin ≤0.032≤0.032
Amoxicillin ≥32≥32
Ceftriaxone ≥64 ≥64
Chloramphenicol >16>8b
Erythromycina >8 >8
Azithromycin >8 >8
Clarithromycin >10 >10
Amikacin >16 >16
  • a Erythromycin, erythromycin ethyl succinate.

  • b For a single isolate, the MBC was ≤8 μg/ml.