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Journal of Clinical Microbiology, June 1998, p. 1679-1682, Vol. 36, No. 6
0095-1137/98/$04.00+0
Copyright © 1998, American Society for Microbiology. All rights reserved.

"Flexispira rappini" Bacteremia in a Child with Pneumonia

Wee Tee,1,* Karin Leder,2 Elena Karroum,2 and Michael Dyall-Smith3

Victorian Infectious Diseases Reference Laboratory, North Western Health Care Network, Old Fairfield Hospital Campus, Fairfield,1 Department of Infectious Diseases and Microbiology, Monash Medical Centre, Clayton,2 and Department of Microbiology and Immunology, Melbourne University, Parkville,3 Victoria, Australia

Received 22 December 1997/Returned for modification 17 February 1998/Accepted 17 March 1998

We describe a case of "Flexispira rappini" bacteremia from a 9-year-old girl who presented with a 5-day history of fever, productive cough, and malaise. A chest X-ray result was compatible with right middle lobe pneumonia. Blood culture grew a gram-negative spiral fusiform bacterium 2 days after the inoculation. Biochemical tests showed the organism to be catalase negative, oxidase positive, sodium hippurate hydrolysis negative, and urea hydrolysis negative. 16S rRNA gene sequencing identified this organism as "F. rappini," showing a six-base substitution from the type strain. This is the first report of "F. rappini" bacteremia in a human, suggesting that this organism has the potential of causing invasive infection, but its role in pneumonia is uncertain and could be unrelated to the bacteremia.

* Corresponding author. Mailing address: Victorian Infectious Diseases Reference Laboratory, North Western Health Care Network, Old Fairfield Hospital Campus, Yarra Bend Rd., Fairfield, Victoria 3078, Australia. Phone: 61-3-2802523. Fax: 61-3-4816784. E-mail: weet{at}hna.ffh.vic.gov.au.

Journal of Clinical Microbiology, June 1998, p. 1679-1682, Vol. 36, No. 6
0095-1137/98/$04.00+0
Copyright © 1998, American Society for Microbiology. All rights reserved.


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