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New Covid strain: Genetics experts worry vaccines might not work quite as well a…

2 months ago
in Business
4 min read
New Covid strain: Genetics experts worry vaccines might not work quite as well a…
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“This is the first variant I’ve seen during the whole pandemic where I took a step back and said: ‘Whoa,’ ” he remembers.

Health officials have downplayed the possibility that the coronavirus vaccines won’t work against the UK strain, but Worobey and other scientists thinks it’s a possibility — and it’s just a possibility — that this new variant might, to a small extent, outsmart the vaccines.

“This is the first variant I’ve seen where I think there is this burning question,” said Worobey, head of the department of ecology and evolutionary biology at the University of Arizona.

Trevor Bedford, an associate professor in the vaccine and infectious disease division of the Fred Hutchinson Cancer Research Center, is also keeping a close eye on the UK variant.

Large clinical trials have shown that the vaccines by Pfizer/BioNTech and Moderna are about 95% effective against the novel coronavirus. Those trials, however, were done before the UK variant started its explosive growth.

Bedford said he doesn’t believe the vaccine will be useless against the new UK strain, but that it might lower its effectiveness somewhat.

“It might decrease vaccine efficacy from 95% to something like 80% or 85%,” he said. “It would be a modest effect, not a dramatic effect.”

Researchers think 'hundreds' of people in US could have new UK coronavirus strain

Health officials have said there’s no reason to think the vaccine won’t work against the new variant.

“[There is] no evidence to suggest, nor reason to believe, that it would evade our vaccines that we have right now,” Assistant Secretary for Health Admiral Dr. Brett Giroir said Monday.

“This particular variant in the UK, I think, is very unlikely to have escaped the vaccine immunity,” Moncef Slaoui, the head of Operation Warp Speed, said Sunday.

But some scientists point out that this mutation isn’t like others that have preceded it.

“We shouldn’t immediately jump to the conclusion (as many have done) that it isn’t a concern,” Kristian Andersen, a professor in the department of immunology and microbiology at Scripps Research Andersen wrote to CNN. “We simply don’t know at this point in time — but we should know more soon.”

Bette Korber, a scientist at Los Alamos National Laboratory, has also been examining the variant.

“The mutations are indeed worrisome, they ALL need to be tested,” Bette Korber, a scientist at Los Alamos National Laboratory, wrote to CNN when asked if the new mutation was a concern for the vaccine.

The UK variant has an unusually large number of mutations — 14 changes and 3 deletions in its genetic code that impact the building blocks of its proteins, according to the CDC.
When can YOU get the vaccine? It depends on your health, occupation and where you live

“This virus has like 17 unique mutations that haven’t been seen elsewhere, and that is really unusual,” Worobey said.

“The accrual of 14 lineage-specific amino acid replacements prior to its detection is, to date, unprecedented in the global virus genomic data for the Covid-19 pandemic,” British scientists reported last week.

It’s not just the number of mutations that has some…



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