Statistics by Country for Chickenpox

Incidence (annual) of Chickenpox:

120,624 annually (1995); 46,016 annual cases notified in USA 1999 (MMWR 1999); 199.14 per 100,000 in Canada 2000¹

Incidence Rate for Chickenpox: approx 1 in 2,254 or 0.04% or 120,624 people in USA [about data] Extrapolation of Incidence Rate for Chickenpox to Countries and Regions: WARNING! EXTRAPOLATION ONLY. NOT BASED ON COUNTRY-SPECIFIC DATA SOURCES. The following table attempts to extrapolate the above incidence rate for Chickenpox to the populations of various countries and regions. As discussed above, these incidence extrapolations for Chickenpox are only estimates and may have very limited relevance to the actual incidence of Chickenpox in any region:

About extrapolations of prevalence and incidence statistics for Chickenpox:

WARNING! EXTRAPOLATED STATISTICS ONLY! Not based on data sources from individual countries. These statistics are calculated extrapolations of various prevalence or incidence rates against the populations of a particular country or region. The statistics used for prevalence/incidence of Chickenpox are typically based on US, UK, Canadian or Australian prevalence or incidence statistics, which are then extrapolated using only the population of the other country. This extrapolation calculation is automated and does not take into account any genetic, cultural, environmental, social, racial or other differences across the various countries and regions for which the extrapolated Chickenpox statistics below refer to. The extrapolation does not use data sources or statistics about any country other than its population. As such, these extrapolations may be highly inaccurate (especially for developing or third-world countries) and only give a general indication (or even a meaningless indication) as to the actual prevalence or incidence of Chickenpox in that region. These statistics are presented only in the hope that they may be interesting to some people.

About prevalence and incidence statistics in general for Chickenpox:

The word 'prevalence' of Chickenpox usually means the estimated population of people who are managing Chickenpox at any given time (i.e. people with Chickenpox). The term 'incidence' of Chickenpox means the annual diagnosis rate, or the number of new cases of Chickenpox diagnosed each year (i.e. getting Chickenpox). Hence, these two statistics types can differ: a short 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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