title: Mycobacterium madagascariense
text: # Mycobacterium madagascariense
  
  Mycobacterium madagascariense Etymology: madagascariense, relating to Madagascar where it was first isolated.
  
  ## Description
  
  Polymorphic, gram-positive, nonmotile and acid-fast rods.
  
  Colony characteristics
  
  * Smooth and glistening colonies with yellow or orange pigmentation (1-2mm in diameter).
  
  Physiology
  
  * Rapid growth on Löwenstein-Jensen medium and Middlebrook 7H10 agar at 31 °C. No growth at 37 °C or above.
  
  Differential characteristics
  
  * Differentiated from Mycobacterium aurum and Mycobacterium obuense by its failure to grow at 37 °C
  
  ## Pathogenesis
  
  * Not known to be pathogenic.
  * Biosafety level 1
  
  ## Type strain
  
  * First isolated from three different sphagnum biotopes in Madagascar.
  
  Strain P2 = ATCC 49865 = CIP 104538 = JCM 13574.
  
  