Figure 4.1. Percent
of adults aged 18 years and over who received influenza vaccine during the past 12 months, by
age group and quarter: United States, 1997–2002
NOTES: Respondents
were asked if they had received an influenza vaccination during the past 12
months. Responses to this question cannot be used to determine when during
the preceding 12 months the subject received the influenza vaccination. In
addition, estimates are subject to recall error, which will vary depending
on when the question is asked because the receipt of influenza vaccinations
is seasonal. The analysis excluded those with unknown influenza vaccination
status (about 1% of respondents).
DATA SOURCE: Sample
Adult Core component of the 1997-2002 National Health Interview Surveys.
The estimate for 2002 was based on data collected from January through
June.
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Based
on data obtained from the second quarter of 2002, the percent of persons who
received influenza vaccine during the past year was 67.6% for adults aged 65
years and over, 33.0% for adults aged 50-64 years, and 16.0% for adults
18-49 years.
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For
persons aged 65 years and over, the second
quarter estimate increased from 65.4% in 2001 to 67.6% in 2002. This is
similar to the estimate of 68.0% in the second quarter of 2000, which is before the vaccine delays occurred in the fall of 2000. (3,4) For the other two age groups, the second quarter
estimates in 2002 were still lower than that in 2000. |