Weekly Cumulative Influenza Vaccination Coverage, by Flu Season and Race/Ethnicity, Medicare Fee-For-Service Beneficiaries aged ≥65 years, United States

• Influenza vaccination coverage among Medicare fee-for-service beneficiaries aged ≥65 years 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, 2019 and followed through May 31, 2020 for 2019-20 flu season; and enrolled as of August 1, 2020 and followed through May 31, 2021 for 2020-21 flu season; and enrolled as of Aug 1, 2021 and followed through May 28, 2022 for the 2021-22 flu season.

• Additional information about data source is available https://www2.ccwdata.org/web/guest/home/.

Weekly Cumulative Doses (in Millions) of Influenza Vaccine Distributed by Flu Season in the United States

• Archived data are available here: https://data.cdc.gov/resource/e5zk-7tx5
• Flu vaccine is produced by private manufacturers, so supply depends on manufacturers. Vaccine manufacturers have projected that they will supply the United States with as many as 173.5 million to 183.5 million doses of influenza vaccines for the 2022-2023 season.
• Additional information is available: https://www.cdc.gov/flu/prevent/vaccine-supply-distribution.htm.

Cumulative Influenza Vaccination Coverage, by Flu Season and Race/Ethnicity, Pregnant Persons 18-49 years

• These monthly flu vaccination coverage estimates for pregnant persons are based on electronic health record (EHR) data from the Vaccine Safety Datalink (VSD), a collaboration between CDC’s Immunization Safety Office and nine integrated health care organizations.§ This system has been used annually to estimate vaccination coverage among pregnant persons. COVID-19 vaccination coverage for pregnant persons is available here.

• Figure 3A. Monthly Cumulative Influenza Vaccination Coverage*, by Flu Season and Race/Ethnicity, Pregnant Persons 18-49 years, United States, Data Source: Vaccine Safety Datalink

• Figure 3B. Cumulative Influenza Vaccination Coverage*, by Month, Flu Season, and Race/Ethnicity, Pregnant Persons 18-49 years, United States, Data Source: Vaccine Safety Datalink

• For any month’s coverage estimate, the denominator is the number of persons with a pregnancy during the current flu season (defined as August through March) beginning before or during the specified month. The numerator is the subset of the denominator who have received flu vaccination prior to, during, or after pregnancy. The denominator increases as more persons are identified as pregnant or having been pregnant during the flu season. Cumulative vaccination coverage for one month may be lower than cumulative coverage for a previous month due to addition to the denominator of persons who are less likely to have received vaccination.

Monthly Cumulative Influenza Vaccination Coverage, by Race/Ethnicity, Pregnant Persons 18 years to 49 years, United States

Weekly Cumulative Influenza Vaccine Doses Distributed in the United States, 2016-2021

• Flu vaccine is produced by private manufacturers. For the 2020-2021 season, manufacturers have projected they will provide as many as 194 to 198 million doses of influenza vaccine for the U.S. market.
• Additional information is available: https://www.cdc.gov/flu/prevent/vaccine-supply-distribution.htm.

Weekly Cumulative Estimated Number of Influenza Vaccinations Administered in Pharmacies and Physician Medical Offices, Adults 18 years and older, United States

- Archived data are here: https://data.cdc.gov/resource/uxgd-cqqc

- CDC is exploring use of data obtained from IQVIA§ (https://www.iqvia.com/) as a source of information on vaccinations administered in retail pharmacies (include chain, mass merchandise, food stores, and independent pharmacies) and physician medical offices.

- These projected pharmacy estimates include flu vaccinations that were billed for (i.e. claims) or paid by cash. Medical office projected estimates are claims-based only.

- The sampled pharmacies and physician medical offices and the captured volume of transactions represent approximately 92% and 82% of influenza vaccines administered nationally, respectively.

- Vaccinations administered in other settings such as workplaces and community settings are not included in these data.

*National estimates for pharmacies and medical offices include vaccinations administered in 50 states and DC. National estimates for medical office vaccinations do not include doses where geographic information (i.e. which state the dose was administered in) was missing. Pharmacy data are through Friday of each week and medical office data are through Saturday of each week. Week ending dates for prior seasons are aligned with the current season’s week ending dates.

§ 1) King, L. M., Bartoces, M., Fleming-Dutra, K. E., et. al, L. A. (2020). Changes in US outpatient antibiotic prescriptions from 2011–2016external icon. Clinical Infectious Diseases, 70(3), 370-377. 2) McLaughlin, J. M., Swerdlow, D. L., Khan, F., et. Al (2019). Disparities in uptake of 13-valent pneumococcal conjugate vaccine among older adults in the United Statesexternal icon. Human vaccines & immunotherapeutics, 15(4), 841-849.

Because inventory reporting is no longer required, Vaccines.gov information will not be updated on this site after July 2024.

Cumulative Influenza Vaccination Coverage Differences by Race/Ethnicity, Children 6 months through 17 years, United States Vaccinations

• Influenza vaccination coverage among children is assessed through the National Immunization Survey-Flu (NIS-Flu) annually, providing weekly influenza vaccination coverage estimates for children 6 months–17 years based upon parental report. (https://www.cdc.gov/vaccines/imz-managers/nis/about.html)

o NIS-Flu is a national random-digit-dialed cellular telephone survey of households conducted during the flu season (October-June).

• Final estimates for prior seasons and other flu vaccination data are available at CDC’s FluVaxView: https://www.cdc.gov/flu/fluvaxview/index.htm.

Cumulative Influenza Vaccination Coverage, Adults 18 years and older, by Age Group and Race/Ethnicity, United States, 2020-21, IPSOS Knowledge Panel Omnibus and NORC AmeriSpeak Omnibus Surveys

Weekly Cumulative Influenza Vaccination Coverage, Children 6 months through 17 years, United States

• Archived data are available here: https://data.cdc.gov/resource/vfj2-bfuw
• Influenza vaccination coverage among children is assessed through the National Immunization Survey-Flu (NIS-Flu) annually, providing weekly influenza vaccination coverage estimates for children 6 months–17 years based upon parental report. (https://www.cdc.gov/vaccines/imz-managers/nis/about.html)
o NIS-Flu is a national random-digit-dialed cellular telephone survey of households conducted during the flu season (October-June).
• Final estimates for prior seasons and other flu vaccination data are available at CDC’s FluVaxView: https://www.cdc.gov/flu/fluvaxview/index.htm.