Post-polio syndrome (PPS) is a condition that can develop years or even decades after recovery from polio, marked by a gradual return of symptoms such as muscle weakness, fatigue, and pain. It is believed to result from the long-term strain on nerve cells that survived the original infection, leading to their gradual decline over time. PPS is not contagious and does not involve a reactivation of the virus, but it can significantly affect mobility and quality of life.
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