Big weddings may be allowed despite expected delay to lockdown easing
By Sebastian Payne, Sarah Neville & Chris Giles
Sweden sees 'dark clouds' with outbreaks of COVID delta variant
By Johan Ahlander & Nick Macfie
The Highly Contagious Delta Variant Is On The Rise In The U.S.
By Jane Greenhalgh
What we know about the Covid-19 Delta variant first found in India
By Sheena Mckenzie & Ivana Kottasová
How serious is Delta Covid variant for UK and do vaccines stop it?
By John Burn-Murdoch, Andy Bounds & Oliver Barnes
Delta coronavirus variant believed to have 60% transmission advantage - UK epidemiologist
By Sarah Young & Alistair Smout