What should you know about global polio eradication?

Polio is caused by poliovirus, which can spread between people, especially where sanitation is limited. Some infections cause no obvious illness, so health teams look for paralysis cases and test samples from people and the environment. This surveillance can identify circulation before many people become unwell.

Vaccination trains the immune system to resist poliovirus and helps reduce spread within communities. Eradication requires high protection in every community because gaps can allow the virus to move across borders. The work also includes laboratory testing, contact follow-up and coordination between countries.

Check that children have received the routine polio doses recommended by their local immunisation schedule. Keep vaccination records available, particularly before travel or relocation, and ask a clinician whether an extra dose is advised for a destination or outbreak setting.

Use safe water and careful hand hygiene to reduce the spread of infections, but do not treat these measures as a substitute for vaccination. If public-health teams offer vaccination during a campaign, follow their instructions even when a child appears well.

Seek urgent medical assessment for sudden weakness or loss of movement in an arm or leg, difficulty walking, or trouble breathing or swallowing. Tell the clinician about recent travel, vaccination history and possible contact with someone who had a significant infectious illness. Do not wait for paralysis if a child has concerning neurological symptoms.

Ask which polio vaccinations are recorded, whether any dose is due, and whether travel plans change the advice. You can also ask how to recognise sudden weakness and where to report a suspected infectious illness.