The World Health Organization (WHO) issued fresh clinical advice on Tuesday for treating Covid-19 patients, including those displaying persistent symptoms after recovery, and also said it advised using low-dose anticoagulants to prevent blood clots.

"The other things in the guidance that are new are that Covid-19 patients at home should have the use of pulse oximetry, that's measuring the oxygen levels, so you can identify whether someone at home is deteriorating and would be better off having hospital care," WHO spokesperson Margaret Harris (above) told a UN briefing in Geneva...