World Polio Day: Why Vaccination Still Matters for Every Child

Polio used to be one of the most feared childhood diseases in India. Today, thanks to decades of vaccination drives, India has been polio-free since 2014. But the virus hasn't disappeared from the world, and that's exactly why World Polio Day, observed every year on 24 October, still matters.

At Dr. Kennedy's Saraswathy Multispeciality Hospital, recognised as one of the best hospitals in Madipakkam for family and paediatric care, we see parents every week with questions about vaccination schedules, missed doses, and whether their child is fully protected. This guide answers the questions we hear most often, so you can make informed decisions for your family this World Polio Day.

What Is World Polio Day and Why 24 October?

World Polio Day marks the birth anniversary of Dr Jonas Salk , who developed the first successful polio vaccine in 1955. His work changed the course of public health and set the stage for one of the most successful vaccination campaigns in history.

The day is a reminder of two things at once: how far the fight against polio has come, and how important it still is to keep vaccination rates high. Polio has not vanished globally, and a disease that drops out of the headlines can still return if immunisation gaps open up.

What Is Polio?

Polio, or poliomyelitis, is a highly contagious viral infection that spreads mainly through contaminated food and water, or contact with an infected person's stool. It mostly affects children under five years old, though unvaccinated adults are not immune either.

Once the poliovirus enters the body, it multiplies in the intestines. In most cases, the infection is silent and causes no noticeable illness at all, which is part of what makes polio dangerous: a person can spread the virus without ever knowing they are infected.

Early Symptoms of Polio You Shouldn't Ignore

Most polio infections show mild or no symptoms, which is why routine vaccination matters even when a child seems perfectly healthy. When symptoms do appear, they usually show up 7 to 10 days after exposure and can include:

• Fever
• Sore throat
• Fatigue and general weakness
• Headache
• Nausea or stomach pain
• Stiffness in the neck and back
• Muscle tenderness or spasms

In the rare paralytic form, a child may suddenly lose strength or movement in one or both legs, have difficulty standing, or struggle to breathe if the chest muscles are affected. This progression can happen within hours, which is why any sudden limb weakness in a child needs urgent medical evaluation.

Types of Polio Based on Severity

How Does Polio Spread?

Polio spreads primarily through the faecal-oral route: the virus passes from an infected person's stool into food or water that others consume, especially in areas with poor sanitation. It can also spread through:

• Close contact with an infected person, particularly in crowded households
• Contaminated hands, surfaces or utensils
• Droplets from coughing or sneezing, though this is less common than faecal-oral transmission

Because infected people without symptoms can still shed the virus, polio can circulate quietly in a community for some time before anyone realises it's there. That silent spread is exactly why vaccination coverage has to stay high even after a region is declared polio-free.

Why Vaccination Is the Only Real Protection

There is no cure for polio. Treatment can only manage symptoms and support recovery, which is why vaccination remains the single most effective tool against the disease. Here's how it works:

• Direct protection: The vaccine trains the child's immune system to recognise and fight the poliovirus before it can cause paralysis.
• Herd immunity: When most children in a community are vaccinated, the virus has far fewer opportunities to spread, which indirectly protects infants who are too young to be fully vaccinated.
• Breaking transmission chains: High vaccination coverage stops the virus from circulating long enough to reach vulnerable, unvaccinated children.
• Preventing resurgence: Even polio-free countries like India can see the virus return if vaccination rates drop and the virus is reintroduced from elsewhere.

OPV vs IPV: Understanding India's Polio Vaccines

India uses two types of polio vaccine as part of its Universal Immunisation Programme:

Most children in India receive a combination of both as part of the national schedule, typically starting at 6 weeks of age with further doses through infancy and early childhood, plus booster doses. Your paediatrician can confirm the exact schedule and timing for your child.

India's Journey to Becoming Polio-Free

India was once home to nearly half the world's polio cases. Through sustained Pulse Polio campaigns, house-to-house vaccination drives, and strong community participation, India recorded its last wild poliovirus case in January 2011 and was officially certified polio-free along with the rest of the South-East Asia Region in 2014.

That achievement didn't happen by chance. It took millions of vaccination rounds, dedicated health workers reaching remote areas, and parents choosing to vaccinate their children again and again. Maintaining that status requires the same commitment today, particularly as international travel means the virus can still be imported from regions where it remains active.

Where Does Polio Still Exist?

Globally, wild poliovirus remains endemic in only a small number of countries, largely due to conflict, difficult terrain, and limited healthcare access that make reaching every child with the vaccine a challenge. As long as the virus survives anywhere, every country, including polio-free ones like India, remains at some risk until global eradication is complete.

Common Myths About the Polio Vaccine

• "My child looks healthy, so they don't need the vaccine." Most polio infections show no symptoms at all, so a healthy appearance tells you nothing about exposure or protection.
• "India is polio-free, so vaccination isn't necessary anymore." Polio-free status depends on continued high vaccination coverage. Stopping immunisation puts that status at risk.
• "The oral drops and the injection do the same thing, so one is enough." Each vaccine type adds a layer of protection; the national schedule combines both for the strongest possible immunity.
• "One dose is enough." Full protection requires completing every scheduled dose. Partial vaccination leaves gaps in immunity.

Tips for Parents: Keeping Your Child Fully Protected

• Maintain an immunisation card or app record and track every due date.
• Don't skip booster doses even if your child has already had the primary series.
• If a dose is missed, consult your paediatrician for a catch-up schedule rather than skipping it altogether.
• Participate in Pulse Polio and other government vaccination drives, even if your child is already on the routine schedule.
• Practise good hygiene at home: clean drinking water, regular handwashing, and safe food handling all reduce the risk of transmission.
• If you're travelling internationally, especially to regions with active polio transmission, check with your doctor about additional precautions.

When Should You See a Doctor?

Consult a paediatrician promptly if your child shows:

• Sudden weakness or difficulty moving an arm or leg
• Fever with neck or back stiffness
• Difficulty breathing or swallowing
• Any missed or delayed vaccine doses

Early evaluation matters. If paralysis does occur, getting the child to a hospital quickly allows doctors to manage the condition and begin supportive care and rehabilitation as early as possible.

Frequently Asked Questions

Final Thoughts

World Polio Day is both a celebration of how far India and the world have come, and a reminder that eradication is not yet finished. Every completed vaccine schedule protects not just one child, but the whole community around them.

If you have questions about your child's immunisation schedule, a missed dose, or general paediatric care, our team is here to help.

This article is for awareness and does not replace medical advice. Please consult a qualified doctor for diagnosis, treatment, or vaccination guidance specific to your child.