What should you know about polio contagious?

Poliovirus is shed in stool and can spread when contaminated hands, water, food, or objects reach another person’s mouth. It may also be present in saliva early in illness. People can transmit the virus without feeling unwell, which makes vaccination and hygiene useful even when no one appears sick.

Most infections do not cause paralysis, but a person with infection can still contribute to spread. A positive exposure or illness does not by itself prove that someone has polio; other infections can cause similar early symptoms.

Wash hands with soap and water after toilet use and nappy changes, before meals, and before preparing food. Do not share towels or utensils while illness is being assessed, and clean frequently touched bathroom surfaces. Check vaccination records and contact a clinician or public-health service promptly if exposure occurred during travel or in an area with reported poliovirus.

Get emergency help for sudden limb weakness, inability to walk, difficulty swallowing, or breathing problems. Seek prompt clinical advice for fever followed by severe muscle pain, neck or back stiffness, or reduced movement. Tell the clinician about travel, known contact, vaccination history, and the timing of symptoms so public-health precautions can be considered.

Ask whether you or your child need a catch-up dose, how long precautions should continue, and which symptoms require emergency help. Ask where to report a suspected case if public-health follow-up is recommended.