Seasonal Influenza Vaccine Supply & Distribution
Influenza viruses change from year to year, so influenza vaccines must be updated annually to include the viruses that will most likely circulate in the upcoming season. Once the viruses are selected for the new formulation, private manufacturers produce, test, release and distribute influenza vaccine.
How much influenza vaccine is projected for the 2021-2022 season.
Information about the supply and distribution of flu vaccines in the U.S.
Flu vaccine is produced by private manufacturers, so supply depends on manufacturers. For the 2021-2022 season, manufacturers have projected they will provide as many as 188 to 200 million doses of influenza vaccine for the U.S. market. (Projections may change as the season progresses.) Additional information on vaccine supply and distribution for the 2021-2022 influenza season is available.
Influenza vaccine distribution information for the 2021-2022 season will be posted here as CDC receives it, typically on Fridays. Please continue to check this page for the most up-to-date information.
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