The CDC's newly rebuilt Advisory Committee on Immunization Practices (ACIP) took aim Thursday at a mercury-based preservative long targeted by vaccine skeptics, recommending that children, pregnant women, and all other adults use only single-dose seasonal influenza vaccines without thimerosal.

A new slate of vaccine advisers to the US Centers for Disease Control and Prevention voted Thursday to recommend that Americans receive influenza vaccines that are free of thimerosal even though there is no evidence of harm from the preservative.

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.