What Causes Polio, and How Effective Is the Polio Vaccine?

Question

I recently read about polio, and I was surprised to learn that while it’s rare in many countries, it still exists in some parts of the world. Now I’m trying to understand more about it—what exactly causes polio, and how does it affect the body?

From what I understand, polio is caused by a virus that spreads through contaminated water or food. But how does it lead to paralysis in some people while others recover without major symptoms? Are there specific risk factors that make some people more vulnerable to severe complications?

I also read that the polio vaccine has been responsible for nearly eradicating the disease worldwide. How effective is the vaccine, and do people need booster shots later in life to stay protected? Are there any risks or side effects associated with the vaccine?

Since I prefer natural approaches to immunity, I also looked into Ayurveda’s view on strengthening the body against viral infections. Are there Ayurvedic treatments or lifestyle changes that can improve resistance to viruses like polio?

For those who have been vaccinated or know someone affected by polio, what was your experience? Is the vaccine the best form of protection, or are there additional steps to take for overall immunity?

Dr. Harsha Joy · Accepted Answer

Polio is caused by the poliovirus, which primarily spreads through contaminated food or water, especially in areas with poor sanitation. The virus attacks the nervous system and can cause paralysis in some individuals, while others may experience mild or no symptoms at all. The severity of polio depends on various factors like the person's immune system, age, and general health, but in some cases, the virus can lead to permanent paralysis, often affecting the legs. The polio vaccine is highly effective in preventing the disease and has played a key role in nearly eradicating it worldwide. While booster shots may be recommended in certain cases, the initial vaccination is usually enough for lifelong protection. Though the vaccine is very safe, some minor side effects like fever or swelling at the injection site can occur. Ayurveda supports boosting immunity with practices like balanced nutrition, herbal supplements (e.g., Ashwagandha and Tulsi), and maintaining a healthy lifestyle to strengthen the body’s resistance to infections. The polio vaccine remains the most effective protection, but adopting a holistic approach to health can complement immunity. Many people who have been vaccinated or know someone affected by polio affirm that vaccination is the best defense, providing long-term protection.

What Causes Polio, and How Effective Is the Polio Vaccine? - #15683

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