What to know
- Influenza vaccines are usually updated annually to include the influenza viruses that will most likely circulate in the upcoming season.
- All influenza vaccines for the current season will be trivalent (three component).
- Most (99%) will not include thimerosal as a preservative, and most (73%) will be egg-based.
- Visit FluVaxView to access influenza vaccine distribution information for the current season.
Influenza vaccine information
Influenza viruses change from year to year, so influenza vaccines are usually 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 vaccines.
Influenza vaccines are produced and supplied by private manufacturers. For the 2026-2027 season, vaccine manufacturers have projected that they will supply the United States with 135 million doses of influenza vaccines. These projections may change as the season progresses. All influenza vaccines for the current season will be trivalent (three component). Most (99%) will not include thimerosal as a preservative, and most (73%) will be egg-based.
Total doses distributed
Influenza vaccine distribution information for the current season will be posted on FluVaxView as CDC receives it. Please check FluVaxView for the most up-to-date information: Influenza Vaccine Doses Distributed | FluVaxView | CDC.
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