Case Investigation Form

Pertussis (ICD 10 Code: A37)

II. BACKGROUND INFORMATION
III. CLINICAL DETAILS

IV. TREATMENT INFORMATION
V. SPECIMEN COLLECTION for Bordetella Pertussis
To include linelist for close contacts
Case Definition/Classification:

Suspect Case:  Any person with cough lasting at least 2 weekswith at least one of the following:

  • Paroxysms (i.e. fits) of coughing
  • Inspiratory “whooping”
  • Post-tussive vomiting (i.e. vomiting immediately after coughing) without other apparent cause
  • Apnea, with or without cyanosis (For infants < 1 year old)

Confirmed Case:

  • A suspect case that is laboratory confirmed or epidemiologically linked to a laboratory-confirmed case
  • Laboratory criteria for diagnosis: Isolation of Bordetella pertussis from clinical specimen