The Trump administration’s new vaccine advisers on Thursday endorsed this fall’s flu vaccinations for just about every American but threw in a twist: Only use certain shots free of an ingredient antivaccine groups have falsely tied to autism.

Vaccine advisers recently appointed by Health Secretary Robert F. Kennedy Jr. voted on Thursday to stop recommending flu vaccines containing thimerosal, a mercury-based preservative used to prevent bacterial contamination, to children and pregnant women.

Ahead of the first meeting of newly appointed vaccine advisers to the US Centers for Disease Control and Prevention, lawmakers are sharing fresh concerns about the panel’s membership and last-minute actions that could see Covid-19 and influenza vaccines thrown into question.