YouTube has banned any coronavirus-related content that directly contradicts World Health Organization (WHO) advice. The Google-owned service says it will remove anything it deems medically unsubstantiated". Chief executive Susan Wojcicki said the media giant wanted to stamp out "misinformation on the platform". The move follows YouTube banning conspiracy theories falsely linking Covid-19 to 5G networks. Mrs Wojcicki made the remarks on Wednesday during her first interview since the global coronavirus lockdown began. "So people saying, 'Take vitamin C, take turmeric, we'll cure you,' those are the examples of things that would be a violation of our policy," she told CNN. "Anything that would go against World Health Organization recommendations would be a violation of our policy." Last week, Facebook announced users who had read, watched or shared false Covid-19 information would receive a pop-up alert urging them to visit the WHO's website. Facebook-owned messaging service WhatsApp, meanwhile, stopped users forwarding messages already shared more than four times by the wider community to more than one chat at a time. It comes as some of the UK's largest news publishers, including Daily Telegraph and the Guardian, criticised Google for failing to be transparent about its approach to filtering adverts alongside coronavirus-related content, according to the Financial Times.