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Diphtheria (Corynebacterium diphtheriae)
2010 Case Definition

CSTE Position Statement(s)

  • 09-ID-05

Case Classification

Probable

In the absence of a more likely diagnosis, an upper respiratory tract illness with:

  • An adherent membrane of the nose, pharynx, tonsils, or larynx; AND
  • Absence of laboratory confirmation; AND
  • Lack of epidemiologic linkage to a laboratory-confirmed case of diphtheria.

Confirmed

An upper respiratory tract illness with an adherent membrane of the nose, pharynx, tonsils, or larynx; and any of the following:

  • Isolation of Corynebacterium diphtheriae from the nose or throat; OR
  • Histopathologic diagnosis of diphtheria; OR
  • Epidemiologic linkage to a laboratory-confirmed case of diphtheria.



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