Influenza Vaccination Coverage, Adults 65 Years and Older, United States

  • Influenza vaccination coverage among Medicare fee-for-service beneficiaries 65 years and older is assessed using data files from the Medicare Fee-For-Service (FFS) administrative claims data managed by the Centers for Medicare & Medicaid Services (CMS).
  • Weekly influenza vaccination coverage estimates were calculated using Kaplan-Meier survival analysis, based on beneficiaries enrolled as of August 1 at the start of each flu season (example: Aug 1, 2021) to end of current season reporting time period or end of May the following year for prior seasons (example: May 28, 2022)
  • Additional information about data source is available.
  • Figure 6. Weekly Cumulative Influenza Vaccination Coverage*, by Flu Season and Race/Ethnicity, Medicare Fee-For-Service Beneficiaries 65 years and older, United States, Data Source: Centers for Medicare & Medicaid Services Chronic Conditions Warehouse.
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*Estimates are based on data released by CMS on May 16, 2024. Overall includes persons categorized as ‘Unknown’ for race/ethnicity category.