[Analysis of the sensitivity of mesophilic Aeromonas isolated from feces to antibiotics of everyday use].

The sensitivity to antibiotics of 56 mesophilic strains of Aeromonas (20 A. caviae, 18 A. sobria and 18 A. hydrophila) isolated from the feces of patients with enteritis, 89.2% of strains had some type of resistance, such as 83.9% to ampicillin, 32.1% to carbenicillin, 28.8% to cefalotin, 5.3% to co-trimoxazole and 1.7% to chloramphenicol. 48.2% of strains were simultaneously resistant to two of the tested antibiotics, 3.5% to three and 5.3% to four. 95.7% of ampicillin resistant strains were beta-lactamase producing. A. sobria was more sensitive to cefalotin (MIC less than 8 micrograms/ml) than the remaining species. This finding supports the use of that marker for identification.