The medical journal's editor says UK guidelines don't recommend giving different coronavirus jabs.
Manchester City boss Pep Guardiola says he may stay in management much longer than he anticipated.
Arsenal continue their Premier League resurgence with a ruthless victory over strugglers West Brom at The Hawthorns.
About 30,000 birds are to be culled at the farm near Clough in north Antrim.
Healthcare workers have criticised the red tape and paperwork needed to become an NHS vaccinator.
"Covid is rife in hospitals, but not among children," consultant paediatrician Dr Ronny Cheung said.
One says it is taking legal action against the Welsh Government to obtain scientific evidence.
Up to 300 people gather in London's Hyde Park to protest at Covid-19 restrictions.
After Harry Kane and Son Heung-min continue their 'telepathic' understanding against Leeds, are they destined to be the Premier League's best ever pairing?
A second attack in Bristol in 24 hours left a 15-year-old boy hospitalised.
It comes as a further 57,725 people test positive for the virus, a new daily high.
Tottenham manager Jose Mourinho says he is "disappointed" after three of his players breached coronavirus rules by attending a party over Christmas.
Figures show that more than 3,500 positive Covid-19 cases have been reported in the last 48 hours.
Rangers took a seismic leap towards the Scottish Premiership title as 10-man Celtic's defence crumbled further in a dramatic Old Firm derby at Ibrox.
The number is lower than Friday's figure, which was described as "worryingly high".
People driving to visit beauty spots in Wales are breaking Covid rules, a Snowdonia park warden says.
Volunteers at All Saints Church in East Horndon have praised those who donated £8,700 for repairs.
A woman was injured but her pet Millie died at the side of the road in Great Barr.
A couple move their wedding at short notice to beat new Covid tier changes.
Tony Parsons vanished more than three years ago but no trace of him or his bike has ever been found.
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