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Aerococcus viridans

  • General information

    • the following information is not yet verified
      Taxonomy
      Family: Aerococcaceae

      Natural habitats
      They are in the air and dust and on the skin of people, and have been described as an airborn organism prevalent in occupied rooms.

      Aerococci could be confused with streptococci and staphylococci since they have many characteristics in common, and this may account for the fact that the presence of A. viridans has not often been reported in the hospital environment or in clinical specimens.

      Clinical significance
      Occasional reports have noted a clinical significant role of these organisms in cases of endocarditis and bacteremia

  • Gram stain

    • the following information is not yet verified
      Gram positive cocci,

      grouped in pairs, tetrads, clusters or irregular groups.

  • Culture characteristics

    • the following information is not yet verified

      Obligate aerobic

      Colonies are α-hemolytic, that may be confused with those of either viridans group streptococci or enterococci.

      Greening reaction is produced on blood agar presumably as a result of H2O2 production.

      McConkey no growth

      BBAØ no growth
      They grow poorly, if at all, under anaerobic conditions.

  • Characteristics

  • References

    • James Versalovic et al.(2011) Manual of Clinical Microbiology 10th Edition


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