Fact Check: Social media post misleads about flu vaccine ingredients. Here’s what’s in them.

Instagram post, Oct. 2, 2023 (archived)

Centers for Disease Control and Prevention, What’s in Vaccines?, accessed Oct. 4, 2023

Centers for Disease Control and Prevention, Thimerosal in Flu Vaccine, accessed Oct. 4, 2023

Centers for Disease Control and Prevention, Thimerosal FAQs, accessed Oct. 4, 2023

Centers for Disease Control and Prevention, Seasonal Influenza Vaccine Supply for the U.S. 2023-2024 Influenza Season, accessed Oct. 4, 2023

Centers for Disease Control and Prevention, Information for the 2023-2024 Flu Season, accessed Oct. 4, 2023

Centers for Disease Control and Prevention, TABLE. Influenza vaccines — United States, 2023–24 influenza season*, accessed Oct. 4, 2023

Centers for Disease Control and Prevention, How Influenza (Flu) Vaccines Are Made, accessed Oct. 4, 2023

Centers for Disease Control and Prevention, Cell-Based Flu Vaccines, accessed Oct. 4, 2023

Centers for Disease Control and Prevention, Different types of flu vaccines, accessed Oct. 4, 2023

Centers for Disease Control and Prevention, Vaccine Excipient Summary, accessed Oct. 4, 2023 

Centers for Disease Control and Prevention, Flu Season, accessed Oct. 5, 2023

U.S. Food and Drug Administration, Common Ingredients in U.S. Licensed Vaccines, accessed Oct. 4, 2023

U.S. Food and Drug Administration, Vaccines Licensed for Use in the United States, accessed Oct. 4, 2023 

U.S. Food and Drug Administration, Thimerosal and Vaccines, accessed Oct. 4, 2023

Children’s Hospital of Philadelphia, Vaccine Ingredients – Fetal Cells, accessed Oct. 4, 2023, 

Institute for Vaccine Safety, Excipients in vaccines per 0.5 ml dose, accessed Oct. 4, 2023

NBC News, Caterpillar-Grown Flu Vaccine Protects Better Than Egg-Incubated Vaccine, June 21, 2017

University of Minnesota, CIDRAP News, FDA approves first flu vaccine grown in insect cells, Jan. 17, 2013

U.S. Food and Drug Administration, Fluad Quadrivalent, package insert, accessed Oct. 4, 2023

U.S. Food and Drug Administration, Flucelvax Quadrivalent, package insert, accessed Oct. 4, 2023 

U.S. Food and Drug Administration, Afluria Quadrivalent, package insert, accessed Oct. 4, 2023 

U.S. Food and Drug Administration, Fluarix Quadrivalent, package insert, accessed Oct. 4, 2023

U.S. Food and Drug Administration, Flulaval Quadrivalent, package insert, accessed Oct. 4, 2023

U.S. Food and Drug Administration, Fluzone Quadrivalent, package insert, accessed Oct. 4, 2023

U.S. Food and Drug Administration, Fluzone High-Dose Quadrivalent, package insert, accessed Oct. 4, 2023

U.S. Food and Drug Administration, Flublok Quadrivalent, package insert, accessed Oct. 4, 2023

U.S. Food and Drug Administration, FluMist Quadrivalent, package insert, accessed Oct. 4, 2023

European Collection of Authenticated Cell Cultures, Cell line profile MDCK, accessed Oct. 4, 2023

World Health Organization, How are vaccines developed?, accessed Oct. 5, 2023

The College of Physicians of Philadelphia, Human Cell Strains in Vaccine Development, accessed Oct. 5, 2023

Tina Proveaux, communications coordinator for the Institute for Vaccine Safety at Johns Hopkins Bloomberg School of Public Health, email interview, Oct. 4, 2023

Email exchange with spokesperson for Sanofi, Oct. 5, 2023

Email exchange with spokesperson for GSK, Oct. 5, 2023



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