Mycobacterium abscessus

  • General information

    • the following information is not yet verified
      M. abscessus belongs to the family of nontuberculous mycobacteria (NTM) classified in the rapidly growing mycobacteria (RGM)

      Family: Mycobacteriaceae
      M. abscessus ssp abscessus
      M. abscessus ssp massiliense

      M. abscessus ssp bolletii

      Natural habitats / RGM
      They are ubiquitous in soil, water and dust.
      It has been known to contaminate medications and products, including medical devices.

      General information
      Infections caused by M. absessus complex, are more difficult to treat because of antimicrobial drug resistance.

      M. abscessus can cause a variety of infections such as post traumatic wound infection and disseminated cutaneous diseases and chronic otitis media, bacteremia and ocular and other infections..

      It is also cause of serious lung infections in persons with various chronic lung diseases, such as cystic fibrosis.

      Skin is usually red, warm, tender to the touch, swollen and painful.
      Other signs of infection are fever, chills, muscle aches, and a general feeling of illnes.

  • Gram stain

    • the following information is not yet verified
      Straight or slightly curved Gram positive rods,

      between 0.5 µm x 1.0-2.5 µm.

      They do not stain well with Gram stain.

      Positive (acid fast)

      One acid-fast bacillus/slide is regarded as "suspicious"of a Mycobacterium infection.

  • Culture characteristics

    • the following information is not yet verified

      Obligates aerobic / RGM
      The colonies are non-pigmented.

      M. abscessus exhibit 2 different colony types:
      1) with smooth and shiny morpholgy
      2) with rough and dry morphology

      1) smooyh colony mainly in wounds
      2) rough colony mainly in airways

  • Characteristics

  • References

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