Russian roulette: During the polio epidemics prior to the salk vaccine, many cases occurred which were asymptomatic, of which some did not cause any disturbance neurologically, and others were "latent" causing disturbance in older age-- "post-polio syndrome". Of course probably a large minority of infected persons became paralyzed and/or died soon after infection.
Answered 9/29/2012
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Non-immune: People exposed to wild type polio virus have a 1 or 2 percent chance of getting paralytic polio.
Answered 11/28/2017
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Nervous system attac: When a person who has not been immunized, polio virus will attck the nervous system. the virus may attack the motor nerve cells of the brain stem and spinal cord, killing the infected cells. the virus can also attackbrain cells causing encephalitis. The full name is polio encephalopmyelitis meaning involvement of brain, brainstem and spinal cord.
Answered 6/29/2015
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