US Health Secretary Robert F. Kennedy Jr., a noted vaccine skeptic, has sought to overhaul America's premier medical institutions since taking office

US Health Secretary Robert F. Kennedy said Thursday that firing the director of the Centers for Disease Control and Prevention (CDC) was "absolutely necessary" to restore high standards, as he faced blistering criticism from Democrats urging him to resign.

US President Donald Trump on Thursday threw his support behind his controversial health secretary Robert F. Kennedy Jr., after he was grilled in Congress over decisions to fire scientists and overhaul the nation's vaccine policies.

US Health Secretary Robert F. Kennedy Jr. on Tuesday unveiled the Trump administration's long-awaited roadmap to tackle chronic disease, calling for better nutrition, tighter scrutiny of medical advertising, and even a new push to boost fertility.