Wednesday, December 30, 2020

US reports its first known case of new UK Covid variant

Maanvi Singh
Tue 29 Dec 2020 17.13 EST

A man in Colorado has become the first known US case of the newly identified strain of Covid-19 circulating in the UK. The new variant is thought to be more contagious than other, established variants and has prompted some countries to restrict travel from the UK.

The Colorado man who contracted the new variant, called B.1.1.7, is in his 20s, and had no travel history, according to the state’s health department. In a statement, Governor Jared Polis said that health officials are conducting an investigation into how the man might have contracted the virus, while he recovers in isolation.

Although the new variant had not been found in the US until now, the Centers for Disease Control and Prevention noted that it was likely already circulating through the country. The agency said while the new variant has not been identified through sequencing efforts “labs have only 51,000 of the 17m US cases” – and the variant might not have been picked up.


The new variant has also recently been detected in at least 17 countries, including South Korea, Spain, Australia and Canada. On Christmas Day, the CDC issued new guidelines for travelers from the UK, requiring proof of a negative Covid-19 test.

That the Colorado man who tested positive for the new variant has no travel history is significant in that it suggests the new variant is already spreading through US communities, said Carlos del Rio, an infectious disease expert at Emory University, in a tweet.

“There is a lot we don’t know about this new Covid-19 variant, but scientists in the United Kingdom are warning the world that it is significantly more contagious,” Polis said in a statement. “We are working to prevent spread and contain the virus at all levels.”


Experts say that the coronavirus vaccines currently being distributed are likely to still work to protect people against the new variant. Scientists believe that although it is more contagious, it does not cause a more severe illness than other established variants. Research is still ongoing, however, and it remains uncertain whether the new variant is actually more transmissible due to a genetic advantage, or whether it is simply spreading so widely due to fluke superspreader events. A report from Public Health England found that the new variant was not linked to higher rates of hospitalization or death.

New variants of the coronavirus have been seen almost since the virus was first detected in China nearly a year ago. It is common for viruses to undergo minor changes as they reproduce and move through a population.

The US, unlike the UK, has not broadly and consistently been tracking genomic sequences of Covid-19 infections and has a less robust process for tracking viral mutations.


1 comment:

rjs said...

notice that we're seeing around 200,000 new cases a day, roughly the same number that we're vaccinating daily...that suggests that a more infectious strain could outrun our ability to distribute the vaccine...

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