The last documented case of polio in the US is in 1993.
- The virus has been bought into the country by travelers with polio.
- Before this the case was documented in 1979.
What is polio?
- Polio or poliomyelitis is a disabling or life threatening disease caused by poliovirus.
- It is a contagious disease that cause nerve injury leading to paralysis, difficulty breathing and sometimes death.
To know more about polio here
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