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IID-4.1 Data Details

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IID-4.1 Reduce new invasive pneumococcal infections among children under age 5 years

About the Data

Description of the data source, numerator, denominator, survey questions, and other relevant details about the national estimate.

Data Source: 
Active Bacterial Core Surveillance
Bridged-race Population Estimates
Changed Since the Healthy People 2020 Launch: 
per 100,000
Baseline (Year): 
21.1 (2008)
Target-Setting Method: 
Projection/trend analysis

Number of children under age 5 years with a laboratory-confirmed invasive pneumococcal infection in the past 12 months


Number of children under age 5 years

Comparable Healthy People 2010 Objective: 
Retained from HP2010 objective
Data Collection Frequency: 
Methodology Notes: 

    An invasive pneumococcal infection is defined as a laboratory-confirmed isolation of Streptococcus pneumoniae from a normally sterile site (blood, cerebral spinal fluid, etc.).

    FOR SINGLE DATA YEARS: Case rates are calculated based on the resident population of the ABCs surveillance areas for the data year involved. For census years (e.g. 2010), population counts enumerated as of April 1 are used. For all other years, populations estimates as of July 1 are used. Postcensal population estimates are used in rate calculations for years after a census year and match the data year vintage (e.g. July 1, 2010 –July 1, 2011 resident population estimates from Vintage 2011 are used as the denominator for 2011 rates). Postcensal population estimates are used in rate calculations for the years between censuses (e.g. 1991-1999, 2001-2009). Race-specific population estimates for 1991 and later use bridged-race categories. Missing race data was multiply imputed and surveillance rates were standardized to the racial distribution of the US population using the NCHS bridged-race vintage 2010 postcensal file.

Caveats and Limitations: 
Cases with missing race data were multiply imputed using sequential regression imputation methods. ABCs Areas California (San Francisco County and children

Revision History

Any change to the objective text, baseline, target, target-setting method or data source since the Healthy People 2020 launch.

Description of Changes Since the Healthy People 2020 Launch: 
In 2014, Population Estimates was added as a data source to reflect measure's population denominator. The data and target were not revised. In 2014, the baseline statement was revised for clarity. In 2015, the denominator data source name was revised from Population Estimates to Bridged-Race Population Estimates for Census 2000 and 2010. The numerator data source, baseline estimate, target, and target-setting method remain unchanged.


Additional resources about the objective

  1. Centers for Disease Control and Prevention (CDC). Active Bacterial Core surveillance (ABCs).