General information only. This Parent Resource summarizes CDC information about pertussis and does not diagnose an individual child.
What is whooping cough?
Whooping cough, also called pertussis, is a respiratory infection known for episodes of intense coughing, although presentation can differ by age.
What can early pertussis look like?
CDC says early symptoms can resemble a common cold, including a runny or blocked nose, low-grade fever and a mild occasional cough.
What can happen later?
CDC describes repeated rapid coughing fits that can be followed by a high-pitched “whoop,” exhaustion or vomiting. Not everyone has the classic whoop.
Can babies present differently?
Yes. CDC emphasizes that babies may have pauses in breathing or difficulty breathing and may have little or no cough.
Why are infants an important risk group?
CDC states that pertussis can cause serious and sometimes deadly complications in infants, with the highest risk among babies who are not fully protected by vaccination.
References
- U.S. Centers for Disease Control and Prevention. Symptoms of Whooping Cough, 2 December 2025.