Why is the polio vaccine needed?

Poliovirus can spread between people, including from someone with few or no symptoms. Vaccination gives the immune system a prepared response, reducing the chance that infection will cause serious neurological disease. Community vaccination also helps limit opportunities for the virus to circulate.

Review the vaccination record with a healthcare professional and follow the schedule recommended for the child or adult. If a dose was delayed, ask about catch-up rather than restarting vaccination yourself. Tell the clinician about previous reactions or conditions affecting the immune system.

Vaccination does not treat symptoms of an active illness. Seek urgent care for new weakness, difficulty breathing, trouble swallowing, or loss of movement. After a vaccine, emergency symptoms include facial swelling, breathing difficulty, collapse, or widespread hives.

Ask which doses are recorded, whether protection is due now, and what schedule applies after a delay. You can also ask how polio spreads, what reactions to expect, and which symptoms should prompt an urgent call.