Prevalence and Incidence of Ventricular septal defect

Ventricular septal defect: Rare Disease

Ventricular septal defect is listed as a "rare disease" by the Office of Rare Diseases (ORD) of the National Institutes of Health (NIH). This means that Ventricular septal defect, or a subtype of Ventricular septal defect, 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 Ventricular septal defect as a "rare disease". More information about Ventricular septal defect is available from Orphanet

About prevalence and incidence statistics:

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