A new mutation of coronavirus is the most dominant in the world and it is spreading quicker in the UK than the original strain from Wuhan in China, an expert has warned.
Professor Nick Loman, who is part of the Covid-19 Genomics Consortium, said the new strain - known as D614G - has an observable impact on cases in humans and is speeding up outbreaks across the world.
But according to Prof Loman, who is based at the University of Birmingham, the new strain is not thought to increase the risk of death or lengthen hospital stays.
He said scientists analysed more than 40,000 genomes in the UK and found D614G mainly increases transmissions between adults.