Hints and tips:
...The developers of Sputnik V, Russia’s main vaccine, have admitted it may, like others, be less effective against the Delta strain and rowed back on claims made in April that it could provide patients with...
...(FT) Delta plummets Delta suffered a first-quarter pre-tax loss of $607m as it burnt through cash at a rate of $100m a day at the end of March....
International Edition