See what questions
a doctor would ask.
Ophanet, who are a consortium of European partners, currently defines a condition rare when if affects 1 person per 2,000. They list Monosomy 8q21 q22 as a "rare disease". More information about Monosomy 8q21 q22 is available from Orphanet
The term 'prevalence' of Monosomy 8q21 q22 usually refers to the estimated population
of people who are managing Monosomy 8q21 q22 at any given time.
The term 'incidence' of Monosomy 8q21 q22 refers to the annual diagnosis rate,
or the number of new cases of Monosomy 8q21 q22 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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