Coronavirus: WHO warns of 'no silver bullet' amid vaccine search BBC NewsNew 90-minute tests for Covid unveiled as WHO warns of 'no silver bullet' answer to pandemic Channel 4 NewsWHO Chief Warns 'There Might Never Be' A Silver Bullet For Coronavirus NPRWHO says there's no 'silver bullet' to defeat coronavirus and 'there might never be' CNBCWHO raises fears there may never be a 'silver bullet' to beat COVID-19 – Sky News FXStreetView Full Coverage on Google News