What should you know about the diphtheria, whooping cough vaccine?

Combination vaccines train the immune system to recognise more than one infection. Diphtheria can cause a throat illness with dangerous swelling, while whooping cough, or pertussis, can cause prolonged coughing spells and breathing problems. Protection is particularly relevant for babies, pregnant people and anyone living closely with a vulnerable infant.

A vaccine does not treat an infection already underway. Mild soreness, tiredness or a short-lived fever can occur after immunisation; ask the vaccinator what to expect based on your history.

Bring your vaccination record and tell the clinician about pregnancy, allergies, previous reactions, current illness and medicines. The recommended schedule depends on age and local guidance, so a missed dose is a reason to ask for a catch-up plan rather than restart protection yourself. Keep the appointment record for future boosters and household planning.

Get emergency help after vaccination for trouble breathing, swelling of the face or throat, collapse or widespread rapidly developing hives. Seek medical advice for a high or persistent fever, unusual drowsiness, or a cough that comes in forceful bouts. A baby with breathing difficulty or pauses needs urgent assessment regardless of vaccination history.

Ask which formulation is appropriate, whether you need a booster or catch-up dose, how pregnancy affects timing, and what symptoms should prompt a review after the appointment.