“We have a simple message for all countries: test, test, test,” World Health Organisation Director-General Tedros Adhanom Ghebreyesus said on Monday at a Covid-19 media briefing.
Testing people suspected of Covid-19 and then tracing who they have had contact with is vital to controlling the epidemic. But the test for SARS-CoV-2, the virus that causes Covid-19, is both expensive and logistically time-consuming…..more
