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Journal of Clinical Microbiology, 07 1997, 1805-1808, Vol 35, No. 7
R McDougall, J Robson, D Paterson and W Tee
An obligately anaerobic, fastidious, slowly growing, spiral, gram- negative
bacterium was isolated from the blood of a 75-year-old man with acute onset
of pyrexia. The patient responded rapidly to appropriate antibiotic
therapy. Extensive investigation failed to detect a focus for the
infection. Phenotypically, the organism was consistent with Desulfovibrio
species. Microscopic investigation revealed an organism with a vibrioid or
spirillioid morphology with rapidly progressive motility by means of a
single polar flagellum. Biochemically, the organism produced large amounts
of H2S and contained desulfovirdin. The 16S rRNA gene sequence of the
organism was found to be most similar to those of members of the genus
Desulfovibrio, with identical sequence homology to the newly proposed
species described by Tee et al. (W. Tee, M. Dyall-Smith, W. Woods, and D.
Eisen, J. Clin. Microbiol. 34:1760-1764, 1996). This is a second unrelated
isolation of this novel species from two widely different locations in
Australia. The two isolates show some phenotypic differences, indicating
that they are different strains of the same species.
Copyright © 1997 by the American Society for Microbiology. All rights reserved.
Bacteremia caused by a recently described novel Desulfovibrio species
Drs. J.J. Sullivan, N.J. Nicolaides & Partners Consulting Pathologists, Taringa, Queensland, Australia.
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