ABCs Report: group B Streptococcus, 2002
Active Bacterial Core Surveillance (ABCs): Emerging Infections Program Network
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California (3 county San Francisco Bay area); Colorado (5 county Denver area); Connecticut; Georgia (20 county Atlanta area); Maryland; Minnesota; New York (7 county Rochester area and 8 county Albany area); Oregon (3 county Portland area); Tennessee (11 urban counties)
The surveillance areas represent 30,242,564 persons and
425,405 persons <1 yr. Source: National Center for Health
Statistics bridged-race vintage 2002 postcensal file
ABCs Case Definition
Invasive group B streptococcal disease: isolation of group B streptococcus from a normally sterile site in a resident of a surveillance area in 2002. Early-onset cases occur at <7 days of age and late-onset occur between 7 and 90 days of age.
Project personnel communicated at least monthly with contacts in all microbiology laboratories serving acute care hospitals in their area to identify cases. Standardized case report forms that include information on demographic characteristics, clinical syndrome, and outcome of illness were completed for each identified case. Regular laboratory audits assess completeness of active surveillance and detect additional cases.
Rates of invasive group B streptococcal disease were calculated using population estimates for 2002. Rates of earlyonset and late-onset group B streptococcal disease were calculated using population estimates for persons <1 yr for 2002. For national projections of cases, race- and age-specific rates of disease were applied from the aggregate surveillance area to the age and racial distribution of the 2002 U.S. population. Cases with unknown race were distributed by area based on reported race distribution for known cases within the eight age categories.
Reported ABCs Profiles
Unknown race (n=309) distributed amongst known
* Cases per 100,000 population for ABCs areas
*Cases per 100,000 population for ABCs areas
|<1||306 (71.9)||20 (4.7)|
|1||2 (0.5)||0 (0.0)|
|2-4||2 (0.2)||1 (0.1)|
|5-17||15 (0.3)||1 (0.02)|
|18-34||150 (2.1)||8 (0.1)|
|35-49||340 (4.6)||21 (0.3)|
|50-64||507 (10.6)||51 (1.1)|
|≥ 65||795 (23.8)||105 (3.1)|
|Total||2,117 (7.0)||207 (0.7)|
*Cases or deaths per 100,000 population for ABCs areas
|White||94 (0.3)||65 (0.2)|
|Black||70 (0.8)||56 (0.6)|
|Other||11 (0.4)||0 (0.0)|
|Total||175 (0.4)||121 (0.3)|
Unknown race (n=22 Early-Onset, n=19 Late-Onset) distributed among knowns
* Cases per 1,000 person <1 yr
National Estimates of Invasive Disease
Early-Onset Cases: 1,550 (0.4/1,000 persons <1 yr)
Late-Onset Cases: 1,100 (0.3/1,000 persons <1 yr)
Total Cases: 20,300 (7.0/100,000 population)
Deaths: 2,050 (0.7/100,000 population)
Healthy People 2010 Update
Objective: Decrease the incidence of invasive early-onset group B streptococcal disease to 0.5 cases per 1,000 live births.
|Race||2010 Objective||2002 Rate*|
* Projected cases per 1,000 persons <1 yr
Centers for Disease Control and Prevention. 2003. Active Bacterial Core Surveillance Report, Emerging Infections Program Network, Group B Streptococcus, 2002.
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