Prevalence and Incidence of Post-polio syndrome

Post-polio syndrome: Rare Disease

Post-polio syndrome is listed as a "rare disease" by the Office of Rare Diseases (ORD) of the National Institutes of Health (NIH). This means that Post-polio syndrome, or a subtype of Post-polio syndrome, affects less than 200,000 people in the US population.

Prevalance of Post-polio syndrome:

Doctors estimate the incidence of PPS at about 25 percent of the survivor population. (Source: excerpt from NINDS Post-Polio Syndrome Information Page: NINDS)

About prevalence and incidence statistics:

The term 'prevalence' of Post-polio syndrome usually refers to the estimated population of people who are managing Post-polio syndrome at any given time. The term 'incidence' of Post-polio syndrome refers to the annual diagnosis rate, or the number of new cases of Post-polio syndrome diagnosed each year. Hence, these two statistics types can differ: a short-lived disease like flu can have high annual incidence but low prevalence, but a life-long disease like diabetes has a low annual incidence but high prevalence. For more information see about prevalence and incidence statistics.

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