Infant whooping cough vaccine: what parents should know

Whooping cough can cause prolonged coughing and breathing problems in young babies. Immunisation prepares the immune system to respond if the infant later encounters the infection. Protection is built through the childhood schedule, so a baby may not be fully protected after one dose. Vaccination reduces risk but does not mean every cough is prevented. A cough after immunisation can still have another cause and needs assessment if breathing, feeding, or alertness changes.

Keep the child health record available and attend the appointments advised by the infant’s healthcare team. Tell the vaccinator about a previous serious reaction, significant illness, or medicines. After the injection, comfort the baby, offer usual feeds, and observe them as advised. Mild soreness, irritability, or a short-lived temperature can occur. Do not give medication routinely unless a healthcare professional advises it. Household members should also check whether their own immunisations are up to date.

Get urgent help for breathing difficulty, swelling of the face or throat, widespread hives with illness, collapse, unusual limpness, or a baby who is difficult to wake. Contact a clinician about a persistent high temperature, poor feeding, repeated vomiting, or fewer wet nappies after vaccination. A new cough is not automatically a vaccine reaction; seek advice if it comes in spells, causes vomiting, or is accompanied by breathing pauses.

Ask which childhood immunisation is due next, what to expect after the dose, how a delayed appointment should be handled, and whether the baby’s medical history changes the plan.