[Comparison of the results of antibiotic sensitivity tests made with the ABAC method and the agar diffusion method]

The sensitivity of 200 bacterial strains, recently isolated from pathological products, has been determined in relation to 16 antibiotics both with the ABAC system and the agar diffusion method (Barry). Furthermore, the interference of the variation of inoculum in the ABAC system (controlled by numbering in Petri dishes) has been evaluated. This study presented a good general agreement of the results between both methods. Results of studies on the variation of inoculum (10(6)--10(7) CFU/ml) performance with the ABAC system, gave a very weak interference in the accuracy of the results (with the exception of a few bacterial species in relation to some antibiotics).