How long does the pertussis vaccine last?

The vaccine does not provide a single fixed lifetime duration for everyone. Protection depends on the vaccine dose, the person’s age, previous vaccinations, and local immunisation guidance. Vaccination lowers the chance of severe whooping cough, although a vaccinated person can still become infected.

Pertussis is a contagious infection that can cause bouts of cough, vomiting after coughing, and difficulty breathing, especially in young babies. A person may have milder illness after vaccination, but vaccination is still useful because it reduces the risk of serious disease and helps limit spread to vulnerable people.

Infants need protection while their immune system is still developing. Pregnant people may be offered pertussis vaccination during pregnancy so antibodies can pass to the baby before birth. The exact timing and need for later doses should follow the schedule used by your healthcare service.

Check your vaccination record and ask a doctor or nurse whether you or your child is due a routine dose, catch-up dose, or booster. Mention pregnancy, an incomplete vaccination history, close contact with a newborn, or a weakened immune system because these details can change the advice.

If someone in your household develops a persistent or worsening cough after contact with whooping cough, arrange medical advice promptly. Antibiotics may be prescribed in some situations to treat infection or reduce transmission; they do not replace vaccination.

Seek urgent medical help for breathing pauses, blue or grey lips, severe breathing difficulty, unusual sleepiness, dehydration, or a baby who is struggling to feed. Contact a clinician soon for repeated coughing fits, a cough followed by vomiting, a high or persistent fever, or symptoms after known exposure.

Keep a baby with possible whooping cough away from other children until a clinician has given clear advice. You can read more about <a href="/conditions/whooping-cough/">Whooping Cough</a>, <a href="/symptoms/cough/">Cough</a>, and <a href="/symptoms/fever/">Fever</a>.

Ask which pertussis-containing vaccine is appropriate, whether any doses are missing, when the next dose is due, and whether pregnancy or household contact with a newborn changes the plan. Also ask what symptoms should prompt testing or treatment.