Prevalence and Incidence of Psittacosis


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About prevalence and incidence statistics: The term 'prevalence' of Psittacosis usually refers to the estimated population of people who are managing Psittacosis at any given time. The term 'incidence' of Psittacosis refers to the annual diagnosis rate, or the number of new cases of Psittacosis 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.

Incidence (annual) of Psittacosis: 16 annual cases notified in USA 1999 (MMWR 1999)
Incidence Rate: approx 1 in 17,000,000 or 0.00% or 16 people in USA [about data]
Prevalance of Psittacosis: Since 1996, fewer than 50 confirmed cases were reported in the United States each year. Many more cases may occur that are not correctly diagnosed or reported.1

Incidence statistics about Psittacosis: The following statistics relate to the incidence of Psittacosis:

  • 1.0 new cases of ornithosis per 100,000 population was notified in Australia 2002 (Yohannes K, Roche P, Blumer C et al. 2004, Australia’s Health 2004, AIHW)
  • 199 new cases of ornithosis was notified in Australia 2002 (Yohannes K, Roche P, Blumer C et al. 2004, Australia’s Health 2004, AIHW)


Footnotes:
1. excerpt from Psittacosis: DBMD

Last revision: April 3, 2003

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