What should you know about the polio vaccine?

Poliovirus spreads mainly through contact with contaminated hands, food, or water and may cause no obvious symptoms at first. In some infections it reaches the nervous system and can lead to weakness or paralysis. Vaccination prepares immune memory before exposure, helping the body respond more effectively.

The recommended schedule varies with age, earlier doses, travel, outbreak settings, and health circumstances. A missed dose does not usually mean the whole series must start again; a vaccination service can check the record and advise the next step.

Take the available immunisation record to a clinic, including records from another country. Tell the vaccinator about severe allergies, a previous reaction, current illness, pregnancy, or medicines that affect immunity. Follow the advised schedule and keep the updated record for school, travel, or future healthcare visits.

Temporary soreness, tiredness, or a mild fever can occur after a dose. Fluids, rest, and appropriate comfort measures may help. Do not delay urgent care for neurological symptoms while waiting for a vaccine appointment.

Emergency care is needed for breathing difficulty, facial or throat swelling, collapse, or a rapidly spreading allergic reaction after vaccination. Seek urgent assessment for sudden limb weakness, difficulty swallowing, loss of movement, or severe breathing muscle weakness, whether or not vaccination has recently occurred.

Ask whether the record is complete, what to do about a missed dose, whether travel changes the plan, and which post-vaccination symptoms should prompt a call.