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RFK Jr.’s CDC panel ditches some flu shots based on anti-vaccine junk data
Flu shots with thimerosal abandoned, despite decades of data showing they're safe.
The vaccine panel hand-selected by health secretary and anti-vaccine advocate Robert F. Kennedy Jr. on Thursday voted overwhelmingly to drop federal recommendations for seasonal flu shots that contain the ethyl-mercury containing preservative thimerosal. The panel did so after hearing a misleading and cherry-picked presentation from an anti-vaccine activist.
There is extensive data from the last quarter century proving that the antiseptic preservative is safe, with no harms identified beyond slight soreness at the injection site, but none of that data was presented during today's meeting.
The significance of the vote is unclear for now. The vast majority of seasonal influenza vaccines currently used in the US—about 96 percent of flu shots in 2024–2025—do not contain thimerosal. The preservative is only included in multi-dose vials of seasonal flu vaccines, where it prevents the growth of bacteria and fungi potentially introduced as doses are withdrawn.
