Characterisation of Exiguobacterium aurantiacum isolates from blood cultures of six patients

Tyrone L. Pitt*, H. Malnick, J. Shah, M. A. Chattaway, C. J. Keys, F. J. Cooke, H. N. Shah

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)


Exiguobacterium spp. are alkaliphilic, halotolerant, non-spore-forming Gram-positive bacilli, hitherto uncharacterised from human infections. Six isolates of Exiguobacterium aurantiacum were obtained from patients with bacteraemia, three of whom had myeloma. All isolates formed orange-yellow pigmented colonies on blood agar, were catalase- and DNase-positive, and grew on nutrient agar at pH 10 and in the presence of NaCl 6% w/v. The six isolates were susceptible to all antimicrobial agents tested and were uniform in their fatty acid and mass spectrum profiles.

Original languageEnglish
Pages (from-to)946-948
Number of pages3
JournalClinical Microbiology and Infection
Issue number9
Publication statusPublished - Sept 2007


  • Bacteraemia
  • Exiguobacterium aurantacum
  • Human infections
  • Identification
  • Mass spectrum profiles
  • Susceptibility


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