Prevalence and Incidence of Group B Streptococcal Infections


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About prevalence and incidence statistics: The term 'prevalence' of Group B Streptococcal Infections usually refers to the estimated population of people who are managing Group B Streptococcal Infections at any given time. The term 'incidence' of Group B Streptococcal Infections refers to the annual diagnosis rate, or the number of new cases of Group B Streptococcal Infections 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 Group B Streptococcal Infections: 6.9 cases per 100,000 (DBMD)
Incidence Rate: approx 1 in 14,492 or 0.01% or 18,767 people in USA [about data]
Prevalance of Group B Streptococcal Infections: Group B streptococcus -- 6.9 cases per 100,000; estimated 18,900 cases and 1,900 deaths annually in the United States1 ... Approximately 19,000 cases occur annually in the United States; approximately 7,500 occurred in newborns before recent prevention. The rate of neonatal infection has decreased from 1.7 cases per 1,000 live births (1993) to 0.5 cases per 1,000 live births (2000).2

Footnotes:
1. excerpt from Active Bacterial Core Surveillance: DBMD
2. excerpt from Group B Streptococcal Disease (GBS): DBMD

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