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 2020-2021 season.
Information about the supply and distribution of flu vaccines in the U.S.
Influenza vaccine distribution information for the 2020-2021 season is posted here as CDC receives it, typically on Fridays. Please continue to check this page for the most up-to-date information.
Flu vaccine is produced by private manufacturers, so supply depends on 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. (Projections may change as the season progresses.) As noted below, manufacturers are already distributing flu vaccine with no significant delays reported (Additional information on vaccine supply and distribution for the 2020-2021 influenza season is available). However, because of the record number of doses being produced this season, production and distribution will occur over a longer period.
|Week||Total Doses Distributed|
*This number has been corrected from 197.4M doses, which was incorrectly reported for the week of November 20, 2020.
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