ABCs Report: Streptococcus pneumoniae, 1998

February 2, 2010: Content on this page kept for historical reasons.

Active Bacterial Core Surveillance (ABCs): Emerging Infections Program Network

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ABCs Areas

California (San Francisco County); Connecticut; Georgia (20 county Atlanta area); Maryland (6 county Baltimore area); Minnesota (7 county Twin Cities area); New York (7 county Rochester area); Oregon (3 county Portland area); Tennessee (5 urban counties)

ABCs Population

The surveillance areas represent 17,383,935 persons. Source: U.S. Bureau of the Census, 1998

ABCs Case Definition

Invasive pneumococcal disease: isolation of Streptococcus pneumoniae from normally sterile site in resident of a surveillance area in 1998.

ABCs Methodology

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. Pneumococcal isolates were collected and tested for susceptibility at reference laboratories using NCCLS methods. Regular laboratory audits assess completeness of active surveillance and detect additional cases.

All rates of invasive pneumococcal disease were calculated using U.S. Bureau of the Census postcensal population estimates for 1998. 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 1998 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

Reported ABCs Profiles
Race No. (Rate*)
White 2,600 (19.1)
Black 1,469 (49.5)
Other 113 (13.7)

Unknown race (n=498) distributed among knowns.

* Cases per 100,000 population for ABCs areas.

Reported ABCs Profiles by ethnicity
Ethnicity No. (Rate*)
Hispanic 131 (17.1)
Non-Hispanic 1,725 ——
Unknown 2,326 ——

*Cases per 100,000 population for ABCs areas

Citation

Centers for Disease Control and Prevention. 1999. Active Bacterial Core Surveillance Report, Emerging Infections Program Network, Streptococcus pneumoniae, 1998.

Reported ABCs Profiles by age
Age (years) Cases
No. (Rate*)
Deaths
No. (Rate*)
<1 397 (165.3) 5 (2.07)
1 483 (202.5) 3 (1.26)
2-4 265 (36.9) 0 (0.00)
5-17 126 (4.0) 3 (0.10)
18-34 349 (8.1) 15 (0.35)
35-49 783 (17.9) 86 (1.96)
50-64 584 (24.2) 75 (3.11)
≥ 65 1,195 (60.5) 198 (10.03)
Total 4,182 (24.1) 385 (2.21)

*Cases or deaths per 100,000 population for ABCs areas

Reported ABCs Profiles by syndrome
Syndrome No. (%*)
Meningitis 170 (4.1)
Bacteremia without focus 1,612 (38.5)
Bacteremic pneumonia 2,246 (53.7)

*Percent of cases

Reported ABCs Profiles by antibiotic susceptibility
Antibiotic Susceptibility S*
%
I
%
R
%
Penicillin 75.6 10.5 13.9
Cefotaxime 85.9 8.0 6.1
Erythromycin 84.9 0.2 15.0
TMP/Sulfa 70.9 6.0 23.1
Levofloxacin 99.8 0.0 0.2
Vancomycin 100.0 0.0 0.0

Based on reference lab testing of 3,602 isolates.

* Susceptible; Intermediate; Resistant

National Projections of Invasive Disease

Cases: 63,000 (23.3/100,000)
Deaths: 6,100 (2.2/100,000)

Healthy People 2010 Update

Objective: Decrease the incidence of invasive pneumococcal infections to 50 per 100,000 persons less than 5 years of age and to 46 per 100,000 persons aged 65 and older.

Reported ABCs Profiles by objectives
Age (year) 2010 Objective 1998 Rate*
< 5 50/100,000 87.6
≥ 65 46/100,000 60.2

*Projected cases per 100,000 U.S. population

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