Prevalence and Incidence of Meningococcal disease

About prevalence and incidence statistics: The term 'prevalence' of Meningococcal disease usually refers to the estimated population of people who are managing Meningococcal disease at any given time. The term 'incidence' of Meningococcal disease refers to the annual diagnosis rate, or the number of new cases of Meningococcal disease 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 Meningococcal disease: 2,501 annual cases notified in USA 1999 (MMWR 1999)
Incidence Rate: approx 1 in 108,756 or 0.00% or 2,500 people in USA [about data]
Prevalance of Meningococcal disease: Neisseria meningitidis -- 0.8 cases per 100,000; estimated 2,200 cases and 275 deaths annually in the United States ¹

Incidence statistics about Meningococcal disease: The following statistics relate to the incidence of Meningococcal disease:

2,886 new cases of meningococcal disease in America 1995 (Meningitis Foundation of America, CDC, 1994)
Estimated 2,400 to 3,000 annual cases in USA
0.78 per 100,000 in Canada 2000²
650 new cases of Meningococcal B Disease in New Zealand 2001 (NZ ESR Meningococcal Disease Update, 2003)
557 new cases of Meningococcal B Disease in New Zealand 2002 (NZ ESR Meningococcal Disease Update, 2003)
17.4 new cases per 100,000 population for Meningococcal B Disease in New Zealand 2001 (NZ ESR Meningococcal Disease Update, 2003)
14.94 new cases per 100,000 population for Meningococcal B Disease in New Zealand 2002 (NZ ESR Meningococcal Disease Update, 2003)
3.5 new cases of invasive meningococcal infection per 100,000 population was notified in Australia 2002 (Yohannes K, Roche P, Blumer C et al. 2004, Australia’s Health 2004, AIHW)
684 new cases of invasive meningococcal infection was notified in Australia 2002 (Yohannes K, Roche P, Blumer C et al. 2004, Australia’s Health 2004, AIHW)

Footnotes:
1. excerpt from Active Bacterial Core Surveillance: DBMD
2. Notifiable Diseases Online, PPHB, Canada, 2000

Last revision: Nov 3, 2003

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