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[Antibiotic sensitivity of forty-four strains of group EF4 bacteria: study of minimum inhibitory concentrations using
1Laboratoire de Bactériologie, Hôpital Central, CHU, Nancy, France.
Abstract:
EF4 bacteria are found in animal saliva and may contaminate bite wounds. Minimum inhibitory concentrations of 36 antimicrobials against 44 EF4 strains were determined using dilution in Mueller-Hinton agar. EF4 bacteria were susceptible to aminopenicillins, carboxypenicillins, ureidopenicillins, third-generation cephalosporins, fluoroquinolones, rifampicin, and trimethoprime-sulfamethoxazole. Susceptibility was intermediate for penicillin G, low for macrolides and variable for aminoglycosides. EF4 bacteria were resistant to lincomycin and trimethoprime. Routine prophylactic treatment of bite-induced Pasteurella infections using an aminopenicillin or a cycline also protects against EF4 infection of the wound.