Whooping Cough (Pertussis)

A bacterial infection causing long bouts of coughing, sometimes with a 'whoop' sound. It's very dangerous for babies.

ChildrenInfectionLast updated: 21 October 2026

Quick Summary

Primary Symptoms

Cold-like symptoms, then intense coughing fits, a whoop when breathing in, vomiting after coughing and exhaustion.

Common Treatments

Antibiotics such as azithromycin, and hospital care for babies.

Risk Factors

Not being vaccinated, babies too young for vaccines, and close contact.

OverviewSymptomsCausesTreatmentFAQ

Overview

Pertussis is caused by Bordetella pertussis bacteria and spreads easily.

Babies may not whoop but stop breathing. Vaccination in childhood (and in pregnancy in some places) protects babies.

Symptoms

Coughing fits

Long, intense bouts.

Whoop

Sound on breathing in after a fit.

Vomiting

After coughing.

Babies

Pauses in breathing or turning blue: call 112.

Causes & Risk Factors

Biological Causes

Infection with Bordetella pertussis.

Key Risk Factors

  • Not vaccinated Or incomplete vaccination.
  • Age Babies under 6 months.
  • Close contact Household spread.

Management & Treatment

01. Antibiotics

Azithromycin early in illness.

02. Hospital

For babies and severe cases.

03. Vaccination

DTP vaccines prevent it.

Frequently Asked Questions

How long does the cough last?
It can last up to three months.
Should contacts be treated?
Sometimes, to protect babies.

Sources and further reading

Last updated 21 October 2026. For more detail, see these trusted health organisations.