What is thimerosal, does it have side effects and why is RFK Jr. removing the controversial preservative from the flu shot?

Although it has been largely phased out of U.S. vaccines, thimerosal has long been targeted by anti-vaccine advocates.

The mercury-based ingredient has prompted concerns from some organizations, although the CDC has said there is no evidence it ...

The US Department of Health and Human Services has adopted a recommendation to remove a preservative called thimerosal from ...

Flu shots that have more than one dose of vaccine contain thimerosal; other versions don’t have it. HHS said Wednesday that ...

The federal government is recommending flu vaccines remove the preservative thimerosal after Health and Human Services ...

Banning vaccine ingredients without cause increases the perceived risk of vaccines,” one prominent health group said.

HHS Secretary Robert F. Kennedy Jr. formally accepted recommendations that would require all vaccine manufacturers to ...

The action will remove from use the very few flu shots that contain the contested preservative, elevating unproven fears it ...

RFK Jr. approves a nationwide shift to mercury-free flu vaccines, ending decades of thimerosal use amid rising safety and ...

This is the web edition of D.C. Diagnosis, STAT's twice-weekly newsletter about the politics and policy of health and ...

A CDC panel’s vote to stop recommending thimerosal-containing flu shots would have limited impact, but it illustrates how the ...