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Table 4.1. Percent of adults aged 50 years and over who received influenza vaccine, by age group and sex: United States, 1997-2000

Characteristic

1997

1998

1999

2000

2001

Percent (95% confidence interval)

Aged 50-64 years
Total
Men
Women

31.9 (30.5-33.3)
28.0 (26.1-29.9)
35.5 (33.6-37.4)

33.1 (31.7-34.5)
29.0 (27.0-31.0)
37.0 (35.1-38.9)

34.1 (32.8-35.4)
30.5 (28.6-32.4)
37.4 (35.5-39.3)

34.6 (33.1-36.1)
31.8 (29.8-33.8)
37.1 (35.1-39.1)

32.2 (30.8-33.5)
30.2 (28.3-32.2)
33.9 (32.1-35.7)

Aged 65 years and
over
Total, crude
Total, age adjusted
Men
Women

63.2 (61.9-64.6)
63.1 (61.7-64.4)
64.8 (62.5-67.1)
62.1 (60.5-63.7)

63.3 (61.9-64.7)
63.3 (61.9-64.6)
63.7 (61.5-65.9)
63.0 (61.2-64.8)

65.7 (64.3-67.2)
65.1 (63.6-66.5)
67.2 (65.0-69.4)
64.6 (62.7-66.5)

64.3 (62.9-65.7)
64.0 (62.6-65.4)
65.9 (63.7-68.1)
63.2 (61.5-64.9)

63.0 (61.6-64.4)
63.1 (61.7-64.5)
64.7 (62.4-67.0)
61.7 (59.9-63.4)

NOTES: The analysis excluded those with unknown influenza vaccination status. Age-adjusted estimates for persons aged 65 years and over (Healthy People 2010 leading health indicator) are based on year 2000 standard population using two age groups: 65-74 years and 75 years and over.

DATA SOURCE: Sample Adult Core component of the National Health Interview Survey.

square red bulletFor adults aged 50-64 years, the annual percent of persons who received influenza vaccine decreased from 34.6% in 2000 to 32.2% in 2001. The decrease was primarily seen among women who had higher rates than men.

square red bulletFor adults aged 65 years and over, the annual percent of persons who received influenza vaccine continued to decline: 65.7% in 1999, to 64.3% in 2000 and 63.0% in 2001. This was due to the delay in influenza vaccine availability for 2000-01 and 2001-02 seasons.

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This page last reviewed June 29, 2007

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U.S. DEPARTMENT OF HEALTH AND HUMAN SERVICES
Centers for Disease Control and Prevention
National Center for Health Statistics
Hyattsville, MD
20782

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