Disease
Whooping cough
Paroxysmal cough illness (pertussis)
WOOP-ing kof
High-yield clue
Pertussis runs in three stages - a cold-like catarrhal phase (most contagious), a paroxysmal phase of coughing fits with an inspiratory whoop and post-tussive vomiting, then a slow convalescent phase; young infants may show apnea instead of a whoop.
Overview
A prolonged respiratory illness caused by Bordetella pertussis, studied for its three clinical stages and characteristic inspiratory whoop. It matters as a vaccine-preventable, highly contagious disease most dangerous in young infants.
Classification
- Respiratory syndrome
- Three stages: catarrhal, paroxysmal, convalescent
- Vaccine-preventable
- Highly contagious framing
Lab & identification clues
- Catarrhal stage resembling a common cold (most contagious) vocabulary
- Paroxysmal coughing fits with whoop term
- Marked lymphocytosis association
- Apnea instead of whoop in young infants concept
Associations
- Respiratory-droplet person-to-person transmission
- Most severe in unimmunized infants under 12 months
- Cocooning and maternal-vaccine public-health framing
- Waning immunity driving adolescent/adult reservoir
Commonly confused with
- Bronchiolitis (RSV)
- Common cold / bronchitis
Your notes
Original student-study summary. Sources checked: OpenStax Microbiology 2e, NCBI Bookshelf Medical Microbiology, and CDC topic pages where applicable; reviewed 2026-06. Educational only; no diagnosis, treatment, dosing, or specimen-handling guidance.