Researchers from Imperial College London screened 365,000 people over three rounds of testing between June and September.
Researchers from Imperial College London screened 365,000 people over three rounds of testing between June and September.
Only 15 per cent of Stockholm residents caught coronavirus despite Sweden not imposing a lockdown – as research suggests herd immunity is not an effective Covid-19 strategy.
Scientists at Oxford University say their experimental coronavirus vaccine has been shown in an early trial to prompt a protective immune response in hundreds of people who got the shot. Full story: