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Diseases » Trisomy 22 » Prevalence

Prevalence and Incidence of Trisomy 22

Trisomy 22: Rare Disease

Trisomy 22 is listed as a "rare disease" by the Office of Rare Diseases (ORD) of the National Institutes of Health (NIH). This means that Trisomy 22, or a subtype of Trisomy 22, affects less than 200,000 people in the US population.

Ophanet, who are a consortium of European partners, currently defines a condition rare when if affects 1 person per 2,000. They list Trisomy 22 as a "rare disease". More information about Trisomy 22 is available from Orphanet

About prevalence and incidence statistics:

The term 'prevalence' of Trisomy 22 usually refers to the estimated population of people who are managing Trisomy 22 at any given time. The term 'incidence' of Trisomy 22 refers to the annual diagnosis rate, or the number of new cases of Trisomy 22 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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