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IID-26 Data Details

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IID-26 Reduce new hepatitis C infections

About the Data

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

Data Source: 
National Notifiable Diseases Surveillance System (NNDSS); Centers for Disease Control and Prevention, Center for Surveillance, Epidemiology, and Laboratory Services (CDC/CSELS)
Bridged-race Population Estimates; Centers for Disease Control and Prevention, National Center for Health Statistics and U.S. Census Bureau (CDC/NCHS and Census)
Changed Since the Healthy People 2020 Launch: 
Yes
Measure: 
per 100,000
Baseline (Year): 
0.28 (2007)
Target: 
0.25
Target-Setting Method: 
Maintain consistency with national programs, regulations, policies, and laws.
Target-Setting Method Justification: 
The target reflects program efforts to reduce new infections at a rate of 0.1 rather than 0.03 per 100,000. The program anticipates releasing new hepatitis recommendations that would increase the practice of screening persons at risk in settings in which they receive healthcare.
Numerator: 

Number of new symptomatic hepatitis C cases reported in the past 12 months

Denominator: 

Total population in reporting states

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

    Data are rates per 100,000 population based on the number of symptomatic cases of acute hepatitis C reported to NNDSS. A case definition for new symptomatic cases of hepatitis C is available from CDC.

    FOR SINGLE DATA YEARS: Case rates are calculated based on the resident population of the United States 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, 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.

Changes Between HP2010 and HP2020: 
This objective differs from Healthy People 2010 objective 14-09 in that the numerator was revised from an estimated count to a direct count.

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 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.

References

Additional resources about the objective

  1. Centers for Disease Control and Prevention (CDC). Case definitions for infectious conditions under public health surveillance.
  2. Daniels D, Grytdal S, Wasley A. Surveillance for acute viral hepatitis - United States, 2007. MMWR Surveillance Summary. May 22 2009;58(3):1-27.