Prevalence and Incidence of SCID


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

Prevalance of SCID: approximately 1-per-500,000 (NIDCD); 1-per-million
Prevalance Rate: approx 1 in 500,000 or 0.00% or 543 people in USA [about data]
Prevalance of SCID: Approximately one in every million people develop SCID1

1. excerpt from Primary Immune Deficiency, NIAID Fact Sheet: NIAID

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