Efficacy of the E‐test in evaluating the antimicrobial susceptibility of anaerobic bacteria of veterinary interest

S. PIRIZ, J. VALLE, M.A. HURTADO, E.M. MATEOS, P. MARTIN-PALOMINO AND S. VADILLO. 1995. A study was made of the sensitivity of 39 clinical isolates of anaerobic bacteria to 10 antimicrobial agents. Minimal inhibitory concentrations (MICs) were calculated using a new method-the E-test (AB Biodisk, Solna, Sweden)―and compared with those obtained using the conventional agar dilution method. Agreement between the MICs obtained by the two methods with a variation of ± 2 dilutions was 78.7%. The E-test, though less sensitive than the conventional agar dilution method, may be of value in clinical veterinary practice when rapid selection of treatment for a given infectious process is required.