Shigella species

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Shigella /
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Background

  • Gram-negative bacillus that is closely related to Escherichia coli
  • Automated methods frequently misidentify as Escherichia coli, so needs phenotypic testing with serology
  • Needs azithromycin susceptibility to be requested specifically, if it is resistant to others
    • However, there are no standardized breakpoints, so you have to use the epidemiologic cutoff values