New York Times, May 24, 2021, By Benjamin Mueller
LONDON — A new and potentially more contagious variant of the coronavirus has begun to outpace other versions of the virus in Britain, putting pressure on the government to shorten people’s wait for second doses of vaccines and illustrating the risks of a faltering global immunization drive.
The new variant, which has become dominant in India since first being detected there in December, may be responsible in part for a grievous wave of infections across South Asia, including Nepal, where people have been dying in hospital corridors and courtyards. But efforts to understand the variant picked up once it began spreading in Britain, one of at least 49 countries where it is present. Scientists there are sequencing half of all coronavirus cases amid a push to complete the reopening of its economy.
The preliminary results out of Britain, drawn from only a few thousand cases of the variant, contained both good and bad news, scientists said.
The variant, known by evolutionary biologists as B.1.617.2, is “highly likely” to be more transmissible than the variant behind Britain’s devastating wintertime surge, government scientists have said. That earlier variant, known as B.1.1.7, was itself considerably more contagious than the one that first emerged last year in Wuhan, China.