Former leaders of the Centers for Disease Control and Prevention (CDC) have spoken out against Health Secretary Robert F Kennedy Jr, who they say has had a "wide ranging impact" on healthcare.

The nine medical professionals criticised RFK Jr's policies - including restricting vaccines, pulling funding for medical research, and firing thousands of healthcare workers.

They said the removal of the CDC's former director, Dr Susan Monarez, added "considerable fuel to the raging fire".

Monarez was fired from her role on Wednesday having refused to leave her post, leading to a string of resignations protesting the move.

In an open letter in the New York Times, the former health agency staff said the seven months under RFK Jr's tenure as health and human services (HHS) secretary were "unlike anything our country had ever experienced".