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Appl Environ Microbiol. 1974 August; 28(2): 303-305
Copyright © 1974 American Society for Microbiology. All Rights Reserved.

Hydrogen Sulfide-Producing Variants of Escherichia coli

Section of Clinical Microbiology, Mayo Clinic and Mayo Foundation, Rochester, Minnesota 55901

ABSTRACT

Seventeen strains of H₂S-producing variants of Escherichia coli were isolated from specimens submitted for microbiological study (ten from stool, five from urine, and two from postmortem material). Production of H₂S was unstable in several strains; however, other than their production of H₂S, all strains closely resembled typical E. coli in their biochemical reactions. In vitro susceptibilities of the H₂S-producing variants to antimicrobics closely resembled those of typical E. coli in this laboratory.