Seasonal Influenza Vaccine Supply & Distribution

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exclamation square light iconGetting a flu vaccine is more important than ever during 2020-2021 to protect yourself and the people around you from flu, and to help reduce the strain on healthcare systems responding to the COVID-19 pandemic.

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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.

Information About Vaccine Supply for the 2020-2021 Season

How much influenza vaccine is projected for the 2020-2021 season.

Frequently Asked Questions on Vaccine Supply

Information about the supply and distribution of flu vaccines in the U.S.

Historical Reference of Vaccine Doses Distributed

A ten year look at influenza vaccine distribution 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.

Table of 2020-21 Seasonal Influenza Vaccine — Total Doses Distributed
Week Total Doses Distributed
1/01/2021 192.5 M
12/25/2020 192.3 M
12/18/2020 192.1 M
12/11/2020 190.4 M
12/4/2020 189.4 M
11/27/2020 188.0 M
11/20/2020 186.9 M*
11/13/2020 183.0 M
11/6/2020 179.6 M
10/30/2020 172.3 M
10/23/2020 164.7 M
10/16/2020 154.6 M
10/9/2020 139.4 M
10/2/2020 124.2 M
9/25/2020 105.5 M
9/18/2020 87.5 M
9/11/2020 66.6 M
9/4/2020 47.6 M
8/28/2020 32.4 M
8/21/2020 21.8 M
8/14/2020 13.7 M

*This number has been corrected from 197.4M doses, which was incorrectly reported for the week of November 20, 2020.

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Page last reviewed: January 11, 2021
Content source: Centers for Disease Control and Prevention, National Center for Immunization and Respiratory Diseases (NCIRD)