Acute respiratory infections, including influenza and pneumonia, are the eighth leading cause of death in the US. The best way to protect against flu is annual vaccination.
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Percentage of People Over the Age of 6 Months Receiving Seasonal Influenza Vaccine in the Last Year
The Sample Adult and Sample Child questionnaires of the NHIS were used to construct a dichotomous outcome for receipt of flu vaccine during the past 12 months (yes or no). Data on Sample Adults (18 years and over) are available for the entire period (2000-2010) while data on Sample Children (17 years and under) are available beginning in 2005 and through 2011. Respondents were asked if they had received a flu shot during the past 12 months. Beginning in September 2003, respondents were asked if they had received a flu vaccine sprayed in their nose (sometimes called by the brand name FluMistª) during the past 12 months, in addition to the question regarding the flu shot. Data on children (17 years and under) are available only from 2005 onward.
Numerator: Those who received seasonal flu vaccine during the last flu vaccination season, either in a shot or nasal spray. Beginning in September 2003, respondents also were asked if they had received a flu vaccine sprayed in their nose, in addition to the question regarding the flu shot.
Denominator: Persons aged 6 months or older.
Inclusion Criteria: All Sample Adults aged 18 years and over. All Sample Children aged 6 months to 17 years.
Exclusion Criteria: 1. Sample Adults and Sample Children with unknown flu vaccination status. 2. For educational status: persons under age 25 years. 3. For pregnancy status: males of all ages and females under 18 years of age and over 49 years of age.
This measure is calculated by the Centers for Disease Control and Prevention/National Center for Health Statistics from the National Health Interview Survey. All estimates meet the criteria of less than or equal to 30% relative standard error, unless stated otherwise. Estimates may have been suppressed if there were additional concerns over statistical reliability.