The UK health secretary, Matt Hancock, has said he is self-isolating after receiving an alert through the NHS Covid-19 app. In a video posted on Twitter, he said: 'Last night I was pinged by the NHS coronavirus app, so that means I’ll be self-isolating at home, not leaving the house at all until Sunday.

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'This self-isolation is perhaps the most important part of all the social distancing because I know from the app I’ve been in close contact with somebody who has tested positive and this is how we break the chains of transmission.'

Minister will quarantine until Sunday after being contacted by NHS app ► https://www.theguardian.com/world/2021/jan/19/covid-uk-health-secretary-matt-hancock-to-self-isolate

Coronavirus – latest updates ► https://www.theguardian.com/world/live/2021/jan/19/coronavirus-live-news-independent-pandemic-panel-critical-of-china-and-who-california-urges-pause-to-moderna-vaccine

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