Q: My child was treated for pertussis recently but is coughing again. Can they get reinfected?

Medically reviewed by Sang Hyun Ahn, MD

Content edited by Myeongchan Kim, MD

This post is a dramatization of a question and answer session experienced by our actual medical reviewers. Please note that this content is for informational purposes only and does not constitute medical advice. Always consult with a qualified healthcare professional for any health concerns or before making any decisions related to your health or treatment.

Question:

My child was diagnosed with and treated for pertussis (whooping cough) recently. However, they have started coughing again. Is it possible for a child to get reinfected with pertussis so soon after being treated?

Answer:

It is very understandable to be concerned about the possibility of a pertussis (whooping cough) reinfection.

The good news is that once a person recovers from pertussis, they typically develop immunity that lasts for several years. Therefore, the chances of your child catching it again right after their recent treatment are extremely low. Their immunity from the recent infection should still be strong and protective.

Here are the most likely reasons for your child's current cough:

• Post-pertussis lingering cough: It is very common for a mild cough to persist for 2 to 3 months even after a pertussis infection has been fully treated.

• A new viral infection: It could simply be a common cold or another seasonal respiratory virus.

• Bronchial hyperreactivity: The airways often remain temporarily sensitive and reactive after a bout of whooping cough.

When to see a doctor:

Please have your child evaluated by a pediatrician if you notice any of the following warning signs:

• The classic "whooping" sound returns during coughing spells

• Coughing so severely that it leads to vomiting

• Difficulty breathing or cyanosis (bluish tint to the skin or lips)

• The cough is accompanied by a high fever

Home care management:

To help soothe your child's cough at home, use a humidifier to keep the indoor air moist and encourage plenty of fluid intake. Avoid exposing your child to cold air, secondhand smoke, or other respiratory irritants. It can also help to elevate their upper body slightly while they sleep at night.

Finally, as a general rule for maintaining long-term immunity, ensure that your child remains up to date with their scheduled DTaP (diphtheria, tetanus, and pertussis) vaccinations.

For extra peace of mind and clear guidance when tracking your child's symptoms, the FeverCoach app is always there to help.

fevercoach.us

Apple App Store

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