Epidemiologists and doctors have become the new influencers of social media as they take to Twitter and TikTok to fight Covid mis-information. 

Among them is Ellie Murray who is an assistant professor of epidemiology at Boston University School of Public Health. She has gained over 55,000 followers since March.

She said: "There's no easy way to disentangle misinformation and disinformation with COVID. At first I was kind of leaving it to people who work a lot on coronaviruses and emerging infections. 

"But I realised they were so busy actually tackling the virus that they didn't have a lot of time to explain to people what was going on. And there was a lot of hunger among the public to understand what was going on."

She’s created TikTok videos on mas-wearing and her hand-drawn infographics have been translated into 40 languages. 

But it’s the information-heavy tweetorials - previously aimed at a very small group of researchers - that have really taken off.