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IID-1.10 Data Details

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IID-1.10 Reduce cases of varicella (chicken pox) among persons aged 17 years of age or under

About the Data

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

Data Source: 
National Health Interview Survey (NHIS); Centers for Disease Control and Prevention, National Center for Health Statistics (CDC/NCHS)
Changed Since the Healthy People 2020 Launch: 
No
Measure: 
number
Baseline (Year): 
586,000 (2008)
Target: 
100,000
Target-Setting Method: 
Projection/trend analysis
Target-Setting Method Justification: 
The HP2010 target was a 90 percent reduction in cases, compared with the pre-vaccine period. The HP2020 target is a 95 percent reduction in cases, compared with the pre-vaccine period. Varicella incidence, based on NHIS data, indicate a decline from a baseline of 2,228,000 cases in 1999 to 582,535 cases in 2007. Further declines in cases are expected because of the implementation of routine 2-dose varicella vaccination of all children recommended in 2006.
Numerator: 

Number of persons aged 17 years and under who are reported to have had chicken pox (varicella) in the past year

Comparable Healthy People 2010 Objective: 
Retained from HP2010 objective
Questions Used to Obtain the National Baseline Data: 

    From the 2011 National Health Interview Survey:

    [NUMERATOR:]

    For persons age 17 years or under:

    Has [PERSON] EVER had chickenpox?

    1. Yes
    2. No
    3. Refused
    4. Don't know

    Has [PERSON] had chickenpox DURING THE PAST 12 MONTHS?

    1. Yes
    2. No
    3. Refused
    4. Don't know
Data Collection Frequency: 
Annual
Methodology Notes: 

    Persons are classified as having had chickenpox (varicella) in the past year if they responded “yes” to both questions on chickenpox listed under Numerator.