Chromobacterium violaceum

From IDWiki
Chromobacterium violaceum

Background

Microbiology

  • Gram-negative bacterium
  • Colonies are deep purple to black due to the presence of the violacein pigment
  • Found in water

Epidemiology

  • Mostly tropical or subtropical areas, especially southeast Asia
  • Also in southeast US, most commonly Florida
  • CGD is a risk factor for opportunistic infection, as is G6PD deficiency

Clinical Manifestations

  • Causes wound infections following contaminated water exposure
  • Always with systemic features, including fever (100%) and sepsis (82%)
  • Often bacteremia (60%) and can involve visceral organs (51%), especially lung and liver
  • High mortality (53%)

Differential Diagnosis

Management

Further Reading