Table 2.
Influenza vaccination coverage among adults ≥ 18 years by age, high-risk status, and healthcare personnel -National Health Interview Survey, the 2004-05 to 2010-2011 seasons, United States.
| Influenza vaccination coverage | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|
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| 2004-05 Seasona | 2005-06 Seasonbb | 2006-07 Seasonb | 2007-08 Seasonb | 2008-09 Seasonb | 2009-10 Seasonb | 2010-11 Seasonb | Total change from 2005-06 season to 2010-11 seasonc | Annual average change from 2005-06 season to 2010-11 season | ||||||||
| % | 95% CI | % | 95% CI | % | 95% CI | % | 95% CI | % | 95% CI | % | 95% CI | % | 95% CI | |||
| Age group | ||||||||||||||||
| ≥18 years | 20.9 | 20.1, 21.7 | 27.4d | 26.5, 28.3 | 30.2d | 29.3, 31.1 | 33.0d | 32.0, 33.9 | 35.2d | 34.0, 36.4 | 36.9d | 36.0, 37.9 | 38.1 | 37.2, 39.0 | 10.7 | 2.2* |
| 18-64 years | 13.1 | 12.5, 13.8 | 20.0d | 19.2, 20.9 | 23.0d | 22.1, 24.0 | 25.7d | 24.8, 26.7 | 28.2d | 27.0, 29.4 | 30.8d | 29.8, 31.8 | 31.5 | 30.6, 32.5 | 11.5 | 2.3* |
| 18-49 years | 10.2 | 9.4, 11.0 | 15.2d | 14.3, 16.1 | 17.5d | 16.6, 18.6 | 19.3d | 18.3, 20.3 | 22.4d | 21.1, 23.8 | 25.3d | 24.3, 26.4 | 26.1 | 25.0, 27.2 | 10.9 | 2.2* |
| 50-64 years | 21.0 | 19.6, 22.5 | 32.5d | 30.5, 34.6 | 36.9d | 35.0, 38.8 | 41.1d | 39.1, 43.1 | 41.9 | 39.5, 44.3 | 43.3 | 41.6, 45.1 | 43.7 | 42.1, 45.3 | 11.2 | 2.3* |
| ≥65 years | 61.2 | 59.0, 63.5 | 66.0d | 64.0, 68.0 | 67.7 | 65.6, 69.8 | 69.2 | 67.1, 71.3 | 69.6 | 67.3, 71.9 | 66.5d | 64.5, 68.5 | 70.2d | 68.2, 72.1 | 4.2 | 0.9 |
| Persons with high-risk conditionse | ||||||||||||||||
| 18-64 years | 24.8f | 22.9, 26.7 | 33.9df | 31.6, 36.4 | 37.7df | 35.2, 40.4 | 41.8df | 39.2, 44.5 | 41.4f | 38.6, 44.4 | 44.3f | 41.8, 46.8 | 45.6f | 43.1, 48.2 | 11.7 | 2.4* |
| 18-49 years | 17.6f | 15.4, 20.1 | 24.7df | 21.9, 27.9 | 26.5f | 23.3, 30.1 | 31.9df | 28.5, 35.6 | 31.9f | 27.9, 36.2 | 34.9f | 31.8, 38.3 | 36.7f | 33.3, 40.3 | 12.0 | 2.4* |
| 50-64 years | 33.2f | 30.2, 36.4 | 44.3df | 40.6, 48.2 | 49.9df | 46.2, 53.7 | 53.5f | 50.0, 57.2 | 51.2f | 47.3, 55.2 | 53.8f | 50.4, 57.3 | 54.4f | 51.0, 57.9 | 10.1 | 2.1* |
| Persons without high-risk conditions | ||||||||||||||||
| 18-64 years | 10.4 | 9.7, 11.1 | 16.9d | 16.0, 17.8 | 19.9d | 19.0, 20.9 | 21.9d | 20.9, 22.9 | 24.8d | 23.5, 26.2 | 27.5d | 26.4, 28.6 | 28.1 | 27.2, 29.1 | 11.2 | 2.2* |
| 18-49 years | 8.9 | 8.1, 9.7 | 13.7d | 12.8, 14.7 | 16.2d | 15.2, 17.3 | 17.2 | 16.2, 18.2 | 20.8d | 19.4, 22.3 | 23.8d | 22.7, 24.9 | 24.3 | 23.3, 25.4 | 10.6 | 2.1* |
| 50-64 years | 15.3 | 13.8, 17.1 | 27.2d | 25.1, 29.5 | 31.4d | 29.4, 33.5 | 35.8d | 33.4, 38.3 | 37.2 | 34.4, 40.2 | 38.4 | 36.2, 40.7 | 38.8 | 36.9, 40.7 | 11.6 | 2.2* |
| Health-care personnelg ≥18 years | 34.5 | 31.3, 38.0 | 43.5d | 39.9, 47.2 | 47.1 | 43.6, 50.7 | 47.6 | 44.5, 50.8 | 53.1d | 49.1, 57.3 | 60.3d | 57.1, 63.5 | 55.8 | 52.8, 59.0 | 12.3 | 2.5* |
Abbreviation: CI, confidence interval.
p<0.05 by t test for trend analysis from the 2005-06 season through 2010-11 season.
Estimates are based on interviews conducted during January through June 2005, and vaccination received during August 2004 through May 2005.
Estimates are based on interviews conducted during September through June, and vaccination received during August through May for each influenza season (e.g., the 2005-06 season included persons interviewed during September 2005 through June 2006, and vaccinated during August 2005 through May 2006).
Percentage change did not calculate from the 2004-05 season since vaccine supply shortage occurred and vaccination coverage was low during the 2004-05 season.
p<0.05 by t test for comparisons between two seasons with the prior season as the reference group (e.g., 2005-06 vs. 2004-05, 2006-07 vs. 2005-06, 2007-08 vs. 2006-07, 2008-09 vs. 2007-08, 2009-10 vs. 2008-09, and 2010-11 vs. 2009-10).
Adults categorized as being at high risk for influenza-related complications self-reported one or more of the following: 1) ever being told by a physician they had diabetes, emphysema, coronary heart disease, angina, heart attack, or other heart condition; 2) having a diagnosis of cancer during the preceding 12 months (excluding non-melanoma skin cancer) or ever being told by a physician they have lymphoma, leukemia, or blood cancer during the previous 12 months; 3) being told by a physician they have chronic bronchitis or weak or failing kidneys; or 4) reporting an asthma episode or attack during the preceding 12 months.
p<0.05 by t test for comparisons between persons with high-risk conditions and persons without high-risk conditions within the same age group of each season.
During the 2005-06 through 2008-09 seasons, adults were classified as health-care personnel if they were ≥18 years and currently employed in a health-care occupation or in a health-care--industry setting, on the basis of standard occupation and industry categories recoded in groups by National Center for Health Statistics, Centers for Disease Control & Prevention. From the 2009-10 to 2010-11 seasons, health-care personnel is defined as adults ≥18 years who currently volunteer or work in a hospital, medical clinic, doctor's office, dentist's office, nursing home or some other health-care facility including part-time and unpaid work in a health care facility as well as professional nursing care provided in the home. Vaccination coverage for the 2009-10 and 2010-11 seasons among health-care personnel were 57.5%, and 57.4%, respectively if the old health-care personnel definition of 2005-06 through 2008-09 seasons was used.