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Prevalence and Incidence of Western equine encephalitis

Western equine encephalitis: Rare Disease

Western equine encephalitis is listed as a "rare disease" by the Office of Rare Diseases (ORD) of the National Institutes of Health (NIH). This means that Western equine encephalitis, or a subtype of Western equine encephalitis, affects less than 200,000 people in the US population.

Incidence (annual) of Western equine encephalitis:

1 annual cases notified in USA 1999 (MMWR 1999) ... see also overview of Western equine encephalitis.

Incidence Rate:

approx 1 in 272,000,000 or 0.00% or 1 people in USA [Source statistic for calcuation: "1 annual cases notified in USA 1999 (MMWR 1999)" -- see also general information about data sources]

Incidence extrapolations for USA for Western equine encephalitis:

1 per year, 0 per month, 0 per week, 0 per day, 0 per hour, 0 per minute, 0 per second. [Source statistic for calculation: "1 annual cases notified in USA 1999 (MMWR 1999)" -- see also general information about data sources]

About prevalence and incidence statistics:

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