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IID-7.2 Data Details

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IID-7.2 Achieve and maintain an effective vaccination coverage level of 3 or 4 doses of Haemophilus influenzae type b (Hib) vaccine among children by age 19 to 35 months

About the Data: National

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

Data Source: 
National Immunization Survey (NIS); Centers for Disease Control and Prevention, National Center for Immunization and Respiratory Diseases and National Center for Health Statistics (CDC/NCIRD and CDC/NCHS)
Changed Since the Healthy People 2020 Launch: 
Yes
Measure: 
percent
Baseline (Year): 
80.9 (2012)
Target: 
90.0
Target-Setting Method: 
Maintain consistency with national programs, regulations, policies, and laws.
Target-Setting Method Justification: 
Ninety-percent coverage targets have allowed for dramatic control of vaccine-preventable diseases in the United States. Morbidity has declined at least 99 percent for most diseases from levels in the 20th century. Achieving and maintaining 90 percent coverage is an important way of maintaining herd immunity for this population.
Numerator: 

Number of children aged 19 to 35 months receiving at least 3 or 4 doses of Hib, depending on the vaccine brand

Denominator: 

Number of children aged 19 to 35 months

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

    From the 2013 National Immunization Survey Provider-Immunization History Questionnaire:

    [NUMERATOR:]

    Specify month, day, and year that each vaccine was given, either by the office or another provider, and type of vaccine, as documented in the records.

Data Collection Frequency: 
Annual
Methodology Notes: 

    The National Immunization Survey (NIS) uses a quarterly, random-digit-dialed sample of telephone numbers to reach households with children aged 19–35 months in the 50 states and selected local areas and territories, followed by a mail survey sent to the children's vaccination providers to collect vaccination information. Data are weighted to represent the population of children aged 19–35 months, with adjustments for households with multiple telephone lines and mixed telephone use (landline and cellular), household nonresponse, and exclusion of households without telephone service. Beginning in 2011, surveys include landline and cellular telephone households.

    This measure tracks the proportion of children aged 19 to 35 months receiving at least 3 or 4 doses (the full series including the primary series and booster) of the Haemophilus influenzae type b (Hib) vaccine. The number of Hib vaccine doses required differs according to manufacturer (brand). This measure does take into account the brand of vaccine used and assumes that doses with missing Hib type/brand information are a type requiring 4 doses to be up-to-date.

Trend Issues: 
The Hib shortage from Dec 2007 to Sept 2009 and the resulting ACIP recommendation to suspend the booster dose of Hib.
Changes Between HP2010 and HP2020: 
This objective differs from Healthy People 2010 objective 14-22b in that the numerator for this objective was revised from "the number of children aged 19 to 35 months receiving at least 3 doses of Hib" to "the number of children aged 19 to 35 months receiving at least 3 or 4 doses of Hib, depending on the vaccine brand."

About the Data: State

Description of the data source, numerator, denominator, survey questions, and other relevant details about the state-level data.

Data Source: 
National Immunization Survey (NIS); Centers for Disease Control and Prevention, National Center for Immunization and Respiratory Diseases and National Center for Health Statistics (CDC/NCIRD and CDC/NCHS)
Measure: 
percent
Numerator: 

Number of children aged 19 to 35 months receiving at least 3 or 4 doses of Hib, depending on the vaccine brand

Denominator: 

Number of children aged 19 to 35 months

Questions Used to Obtain the State Data: 

      From the 2013 National Immunization Survey Provider-Immunization History Questionnaire:

      [NUMERATOR:]

      Specify month, day, and year that each vaccine was given, either by the office or another provider, and type of vaccine, as documented in the records.

Data Collection Frequency: 
Annual
Methodology Notes: 

      The National Immunization Survey (NIS) uses a quarterly, random-digit-dialed sample of telephone numbers to reach households with children aged 19–35 months in the 50 states and selected local areas and territories, followed by a mail survey sent to the children's vaccination providers to collect vaccination information. Data are weighted to represent the population of children aged 19–35 months, with adjustments for households with multiple telephone lines and mixed telephone use (landline and cellular), household nonresponse, and exclusion of households without telephone service. Beginning in 2011, surveys include landline and cellular telephone households.

      This measure tracks the proportion of children aged 19 to 35 months receiving at least 3 or 4 doses (the full series including the primary series and booster) of the Haemophilus influenzae type b (Hib) vaccine. The number of Hib vaccine doses required differs according to manufacturer (brand). This measure does take into account the brand of vaccine used and assumes that doses with missing Hib type/brand information are a type requiring 4 doses to be up-to-date.

Trend Issues: 
The Hib shortage from Dec 2007 to Sept 2009 and the resulting ACIP recommendation to suspend the booster dose of Hib.

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 2012, the original baseline was revised from 57 (2009, first two quarters of data) to 54.8 (2009, full year). This change was made because the 2009 National Immunization Survey (NIS) introduced a new method for measuring Hib vaccination coverage to distinguish between Hib vaccine product types that require a different number of doses for full vaccination. These 2009 NIS data were not available during the target-setting process in early 2010. The target was not revised. In 2014, 2009 through 2011 data were revised to correct errors in programming, in particular the estimates by sex and country of birth. The baseline estimate for the total population and target remained the same. In 2015, the baseline year was revised from 2009 to 2012 due to expanding the sampling frame from landline phones only to a dual frame sample including landline and cell phones. The baseline statement was changed from "54.8 percent of children aged 19 to 35 months in 2009 received 3 or more, or 4 or more doses of Hib antigen, depending on product type received " to "80.9 percent of children aged 19 to 35 months in 2012 received 3 or more, or 4 or more doses of Hib antigen, depending on product type received." The target remains unchanged.

References

Additional resources about the objective

  1. CDC. National and State Vaccination Coverage Among Children Aged 19--35 Months --- United States, 2010. MMWR 2011:60(34):1157-1163.
  2. CDC. National, State, and Local Area Vaccination Coverage Among Children Aged 19--35 Months --- United States, 2009. MMWR 2010;59(36):1171-1177.
  3. CDC. National, State, and Local Area Vaccination Coverage Among Children Aged 19–35 Months — United States, 2011. MMWR 2012;61(35):689-696.