What are the clinical features of Exiguobacterium auranticum (E. auranticum) bacteremia?

From the Research

Clinical Features of Exiguobacterium auranticum Bacteremia

The clinical features of Exiguobacterium auranticum (E. auranticum) bacteremia are not well-established, but several studies provide insight into its characteristics:

• E. auranticum is a rare cause of bacteremia, with limited cases reported in the literature 1, 2.
• The bacterium is typically isolated from environmental samples, but can cause infection in patients, particularly those who are immunocompromised 1.
• Clinical characteristics of E. auranticum bacteremia include:
  • Orange-yellow pigmented colonies on blood agar 2.
  • Catalase- and DNase-positive 2.
  • Growth on nutrient agar at pH 10 and in the presence of NaCl 6% w/v 2.
  • Susceptibility to all antimicrobial agents tested 1, 2.
• Underlying conditions associated with E. auranticum bacteremia include:
  • Malignancy, such as myeloma 2.
  • Immunocompromised state 1.
• The mortality rate associated with E. auranticum bacteremia is not well-established, but one study reported a low 30-day mortality rate in patients with Eubacterium bacteremia, a related condition 3.
• The genomic characteristics of E. auranticum have been studied, revealing the presence of virulence factors and genes associated with antibiotic resistance 4.