Claim: The flu vaccine is contaminated with formaldehyde and polysorbate 80.
Fact-check: Flu vaccines may contain harmless levels of formaldehyde - Full Fact
Verdict: some flu vaccines contain trace amounts of formaldehyde, but not enough to do any harm. some also contain small amounts of polysorbate 80, but this widely used food additive is only potentially harmful to those with a rare allergy to it.
Organisation: Full Fact
Author: Grace Rahman
Date published: 2022-09-26T00:00:00