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- Polio - MayoClinic.com - A comprehensive overview covers polio symptoms, treatment, prevention of this highly contagious viral disease.
https://www.mayoclinic.org/diseases-conditions/polio/symptoms-causes/syc-20376512
- Polio vaccine - Two polio vaccines are used throughout the world to combat poliomyelitis (or polio).
https://en.wikipedia.org/wiki/Polio_vaccine
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