The head of the World Health Organization has urged countries around the world to test every suspected coronavirus case as the number of confirmed infections passed 182,000.

“You cannot fight a fire while blindfolded,” WHO chief Tedros Adhanom Ghebreyesus told journalists. “Test, test, test. Test every suspected case.”

The virus is spreading rapidly, forcing governments to impose restrictions rarely seen outside wartime — closing borders, ordering home quarantine and scrapping public events including major sporting fixtures.