Aseem Malhotra is a deeply controversial British doctor who has just been appointed as Chief Medical Adviser of the Make America Healthy Again campaign group co-founded by Donald Trump's health secretary Robert F Kennedy Junior.

It makes him one of the US Health Secretary's most influential medical advisers - and that's alarming doctors and academics around the world, because Aseem Malhotra, like RFK JR, goes against mainstream, established opinion on many topics.

Most controversially he opposes the MRNA covid vaccines, claiming they cause more harm than good, and wants to end their use in America, even though people are still dying with Covid around the world.

In the UK hundreds of people are dying with covid every month yet Dr Malhotra claims the virus is no longer deadly. He also supports RFK Junior's decision to reinvestigate discredited claims of a link between vaccines and autism, amid alarming levels of vaccine scepticism in America, and outbreaks of deadly measles.

For the latest episode of The Fourcast Krishnan Guru-Murthy talks to Dr Malhotra, but we also examine his claims and scrutinise them by hearing from Stephen Griffin, Professor of Virology at Leeds University - who is a leading scientist in Britain and believes claims being made by Dr Malhotra and RFK Junior are not just wrong but dangerous. Produced by Calum Fraser, Alice Wagstaffe, Georgina Lee, Rob Thomson.