Polio vaccine

Overview

The polio vaccine is a safe and effective shot that protects you from polio, a serious disease that can cause paralysis (loss of ability to move parts of your body). The vaccine teaches your immune system to fight the poliovirus without making you sick.

Polio is very rare in countries with high vaccination rates, but it still exists in a few parts of the world. The vaccine keeps it from coming back.

The polio vaccine is recommended for all infants and children. Some adults may need a booster if they are traveling to areas where polio still occurs or if they work in a lab with the virus.

Symptoms

Common symptoms

• Mild soreness or redness where the shot was given
• Low-grade fever (slight temperature rise)
• Feeling tired or irritable for a day or two

Symptoms in children

• Fussiness or crying more than usual
• Mild swelling at the injection site
• Loss of appetite briefly

Symptoms in older adults

• Similar mild side effects as in younger adults
• Sore arm or muscle ache near the injection site

Causes

Main causes

• Polio is caused by the poliovirus, which spreads from person to person through contaminated food, water, or hands.
• The vaccine prevents polio by building your immunity before you are ever exposed to the virus.

Risk factors

• Not being vaccinated against polio
• Traveling to a country where polio still circulates
• Living in or visiting an area with poor sanitation

When to see a doctor

See a doctor urgently if:

• If you or your child develops signs of a severe allergic reaction within minutes to hours after the vaccine
• If a child has a seizure or becomes very limp after vaccination

Book a routine appointment if:

• To discuss any concerns about the vaccine schedule
• If you missed a dose and need to catch up

Diagnosis

The polio vaccine itself does not need a diagnosis. However, if a person who has not been fully vaccinated shows symptoms of polio, a doctor can test stool samples or throat swabs to look for the poliovirus.

Tests that may be done

• Stool sample testing
• Throat swab testing
• Blood tests to check for antibodies

What to expect at your appointment

If polio is suspected, the doctor will ask about your vaccination history and any recent travel. Testing is usually done through a public health lab to confirm the virus.

Treatment

There is no cure for polio once you get it. Treatment focuses on relieving symptoms and supporting the body while the disease runs its course. The best treatment is prevention through vaccination.

Self-care at home

• Rest and drink plenty of fluids
• Use a cool cloth to reduce fever (if present from vaccine side effects)
• Do not rub or scratch the injection site

Medical treatments

If polio develops, doctors may provide pain relief, breathing support with a machine if paralysis affects the lungs, and physical therapy to help with muscle weakness. Severe allergic reactions to the vaccine are treated with medicines like antihistamines or epinephrine in a hospital setting.

When is surgery considered?

Surgery is not used for the vaccine itself. In rare cases, polio survivors may need surgery later to correct limb deformities, but that is not related to the vaccine.

Living with this condition

After getting the polio vaccine, you can go about your normal daily activities. Keep your arm moving gently to reduce soreness. Follow your regular immunisation schedule to stay protected.

Lifestyle tips

• Keep a record of your vaccines or your child’s vaccines
• Follow the recommended schedule for booster doses if needed
• Practice good hand hygiene to prevent all infections

Diet and exercise

No special diet is needed after vaccination. Eat healthy meals and do light activity as usual. Drink extra water if you have a slight fever.

Mental health and emotional wellbeing

Vaccines can sometimes make people feel anxious, especially when a child is getting a shot. Remind yourself that a quick poke protects against a serious disease. It is normal to be nervous, but the benefits far outweigh the temporary discomfort.

Prevention

Yes, polio can be prevented effectively with vaccination. The polio vaccine is the main reason the disease has nearly disappeared worldwide.

Vaccines

The polio vaccine is usually given as an injection (shot) as part of a combination vaccine. Children typically receive four doses starting at 2 months of age. Adults who are not vaccinated should also get the vaccine.

Screening programmes

There is no routine screening for polio. The best screening is to check your vaccination record to make sure you and your family are up to date.

Complications

If left untreated

• If you do not get the vaccine and then catch polio, you could develop permanent paralysis (especially in the legs or arms).
• Polio can affect the muscles needed to breathe, which can be fatal.
• In some people, polio leads to post-polio syndrome years later, causing new muscle weakness and pain.

Long-term outlook

Thanks to the polio vaccine, the world is closer than ever to eradicating polio for good. For those who are vaccinated, the risk of getting polio is extremely low. Even if polio occurs, early supportive care improves chances of recovery. The outlook for global health is hopeful as vaccination continues.

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