Robert F Kennedy Jr, who once called mandatory vaccination "a holocaust", says Donald Trump has selected him to chair a panel on vaccine safety in a move which seems to confirm that the president-elect still believes there is a link between vaccination and autism.

Before he entered politics, Mr Trump repeatedly claimed that giving children too many vaccines at once was a cause of autism, a theory which has been debunked by medical research.

He said at a Republican debate in 2015 that there had been "so many instances" of children of people who work for his business becoming autistic after having vaccines.