Prevalence and Incidence of Zellweger Syndrome
Prevalance of Zellweger Syndrome:
rare ... see also overview of Zellweger Syndrome.
Zellweger Syndrome: Rare Disease
Zellweger Syndrome is listed as a "rare disease" by the Office of
Rare Diseases (ORD) of the National Institutes of Health
(NIH). This means that Zellweger Syndrome, or a subtype of Zellweger Syndrome,
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 Zellweger Syndrome as a "rare disease".
More information about Zellweger Syndrome is available from Orphanet
About prevalence and incidence statistics:
The term 'prevalence' of Zellweger Syndrome usually refers to the estimated population
of people who are managing Zellweger Syndrome at any given time.
The term 'incidence' of Zellweger Syndrome refers to the annual diagnosis rate,
or the number of new cases of Zellweger 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.