A member asked:

Will all persons exposed to polio virus develop poliomyelitis?

2 doctors weighed in across 2 answers

No: Only 5-10% of those infected will have clinicly apparent illness and only if they actually acquire the germ from an active case. Once one has completed the immunization series they are thought to have lifelong immunity.

Answered 10/14/2011

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No: Many individuals acquire infection with polio virus, experience headches, stiff nec and irritability, a form of encephalitis. Many of these individuals will not go on to experience damage to motor nerve cells in the spinal cord and brain stem.

Answered 7/26/2013

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