Flu shots that have more than one dose of vaccine contain thimerosal; other versions don’t have it. HHS said Wednesday that vaccine makers have said they have the capacity to replace the shots that do contain thimerosal so that vaccine supplies aren’t interrupted.

Health and Human Services (HHS) Secretary Robert F. Kennedy Jr. is planning to fire all the members of the U.S. Preventive Services Task Force (USPSTF) and replace them with members of his own choosing, according to media reports.

Federal guidelines no longer recommend flu vaccines containing a preservative, used in a small percentage of vaccines, that has been falsely linked to autism.