Flu vaccination: adults 65+ (percent)

Percent of adults age 65+ that report having Influenza vaccine in past 12 months

Flu vaccination: adults 65+ (percent)
Report Area 2003-2009 2005-2009 2004-2010 2006-2010 2008-2010 2005-2011 2006-2012
Franklin County, PA 69.5%
(61.1% - 76.8%)
(62.2% - 78.7%)
(59.0% - 73.3%)
(57.1% - 74.0%)
(55.2% - 75.0%)
(59.1% - 72.3%)
(51.6% - 65.5%)
Pennsylvania 68.2%
(67.3% - 69.1%)
(67.9% - 69.9%)
(67.2% - 68.9%)
(69.7% - 71.6%)
(69.7% - 71.9%)
(67.1% - 68.7%)
(67.2% - 68.8%)
Website Updated August 2016

Flu vaccination: adults 65+ (percent)


Sample respondents age 65+ who report influenza vaccination


Sample respondents age 65+ with valid response to influenza vaccination questions


Based on the BRFSS question: "A flu shot is an influenza vaccine injected into your arm. During the past 12 months, have you had a flu shot?"

In 2011, two methodological refinements were made to the Behavioral Risk Factor Surveillance System (BRFSS). The first was to expand the sample to include data received from cell phone users. This change was made to reflect the population better. The second change was to modify the statistical method to weight BRFSS survey data. The new approach simultaneously adjusts survey respondent data to known proportions of demographics such as age, race and ethnicity, and gender. Prior to 2011, the weighting method was post stratification, while in 2011 it is raking. Raking is better able to account for more demographic characteristics and multiple sampling frames. Because of these changes, data collected in 2011 and later cannot be appropriately compared to previous data, although new results should better reflect the health status of the United States (see CDC-Methodologic Changes in the Behavioral Risk Factor Surveillance System in 2011 and Potential Effects on Prevalence Estimates).

In order to create multi-year estimates, two changes were made to the new data. First, respondents who only have cell phones were removed. Second, weights were created specifically for this purpose using the post stratification method. Those two changes make the 2011 data similar to the pre-2011 data and allowed multi-year estimates to be created, even though these estimates will not be as representative of the U.S. population as the single-year estimates using 2011 data without these changes.

Efforts to create a new small area estimate methodology that will allow use all of the improvements instigated with the 2011 data are currently taking place. Once available, that methodology will be used for estimates provided here.

This Indicator uses Age-Adjustment Groups:  65-74, 75+

Estimates based on fewer than 50 cases or with a confidence interval half-width of 10% or more ((upper CI-lower CI/100) >10) are considered unreliable and are not displayed.


CDC. Prevention and control of influenza: Recommendations of the Advisory Committee on Immunization Practices (ACIP), 2007. MMWR 2007;56(RR–06):1–60. Available from: Prevention and Control of Influenza.

Courtesy: Health Indicators Warehouse, <www.healthindicators.gov>