Well either the Russian news agency has amazing sources or this is a shocking lie. RIA Novosti claims Boris Johnson will have “artificial lung ventilation”. Assuming this is untrue, it is a truly dreadful bit of misinformation https://ria.ru/20200406/1569611571.html

If RIA Novosti takes it down, this is what is looked like

Other Russian sources now running the story which appears to be completely false https://twitter.com/gazetaru/status/1246912803094618115?s=21 https://twitter.com/gazetaru/status/1246912803094618115