WASHINGTON: Seventy-seven Nobel prize winners on Monday sent an open letter to the US Senate opposing the nomination of Robert F. Kennedy Jr., President-elect Donald Trump’s choice for Secretary of Health and Human Services (HHS), citing his “lack of credentials” and anti-vaccine beliefs. “In view of his record, placing Mr. Kennedy in charge of DHHS would put the public’s health in jeopardy,” concludes the letter signed by 77 Nobel recipients in medicine, chemistry, physics and economics.