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Appl Environ Microbiol. 1973 September; 26(3): 314-317
Copyright © 1973 American Society for Microbiology. All Rights Reserved.

Computer Identification of Bacteria on the Basis of Their Antibiotic Susceptibility Patterns

¹ Research, Development, and Laboratory Automation Section, Clinical Pathology Department, National Institutes of Health, Bethesda, Maryland 20014

ABSTRACT

A computer program utilizing a Baysean mathematical model was developed to identify bacteria solely on the basis of their antibiotic sensitivities. The model contains probability data on the antibiotic sensitivity patterns for 31 species of bacteria, which account for over 99% of all isolates submitted to our laboratory for testing. During a 4-month test period, antibiotic sensitivity data on 1,000 clinical isolates were processed by the program. The identification achieved by using the model was the same as that of the laboratory for over 86% of the isolates.