Prevalence and Incidence of Mucopolysaccharidosis IV
Mucopolysaccharidosis IV is listed as a "rare disease" by the Office of
Rare Diseases (ORD) of the National Institutes of Health
(NIH). This means that Mucopolysaccharidosis IV, or a subtype of Mucopolysaccharidosis IV,
affects less than 200,000 people in the US population.
About prevalence and incidence statistics:
The term 'prevalence' of Mucopolysaccharidosis IV usually refers to the estimated population
of people who are managing Mucopolysaccharidosis IV at any given time.
The term 'incidence' of Mucopolysaccharidosis IV refers to the annual diagnosis rate,
or the number of new cases of Mucopolysaccharidosis IV 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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