cromwell wrote:Where is the evidence for the 70% claim? Will it too later prove to be wildly inaccurate?
Calum Semple, professor of outbreak medicine at the University of Liverpool and a member of the government’s Scientific Advisory Group for Emergencies (Sage), insisted that public should not worry about the new variant.
The emergence of a new coronavirus strain “is not a disaster” for the UK and won’t lead to “a breakdown in all our plans”, a scientific adviser to the government has said.
A total of 1,108 cases related to the variant have been identified, predominantly in the south and east of England, Public Health England (PHE) announced on Monday.
Scientists at the Covid-19 Genomics UK (COG-UK) consortium are investigating the new strain, which carries a set of mutations in the spike protein that Sars-CoV-2 uses to attach to human cells.
However, COG-UK said there is currently no evidence to suggest that this variation will have any impact on disease severity, antibody response or vaccine efficacy.
Efforts are underway to confirm whether or not any of the mutations are contributing to increased transmission, as previously stated by health secretary Matt Hancock.
Calum Semple, professor of outbreak medicine at the University of Liverpool and a member of the government’s Scientific Advisory Group for Emergencies (Sage), insisted that public should not worry about the new variant.
"People should not be losing sleep about this, they really need to leave the virology to the scientists because we're at the very early stages of understanding what's going on here," he told the BBC on Tuesday.
"What I can say is that coronavirus, like many other viruses, mutate all the time. And without the presence of community immunity – that's because we don't have herd immunity and won't have for many, many months – the virus essentially is free to change and become more comfortable with the humans with which it is living.
"That's what the virus is doing – it is learning how to become slightly better at living with us and becoming slightly more infectious. But that does not mean it's harming us more or causing more severe illness in people."
Prof Semple said it is "the million-dollar question" how the Covid vaccines in development will fare against the new variant, though he insisted he was confident they would remain efficacious.
"Some of the mutations are occurring in the key that the virus uses to unlock the cells,” he said. “And we see this with flu each year and that's why the flu vaccine has to change year on year."
"I would expect the vaccine still to be reasonably effective because it's currently 95 per cent effective. Even if we dropped a few percentage points, it's still going to be good enough, and much better than many other vaccines on the market.
"And the next bit of good news is that the new vaccines are essentially like emails that we send to the immune system, and they're very easy to tweak.
"So if we know that the lock has changed very slightly, we just have to edit that email, change a word or two and then the vaccine that will be ready in six to eight weeks' time after that, will be competent and better targeted to the new strain.
"So this is this is not a disaster. This isn't a breakdown in all our plans. This is just what we expect with a new virus, and it's what the scientists and the doctors have come to understand, and we will adapt."
“The speed at which this has been picked up on is also testament to this phenomenal research effort,” he said. “However, there is no room for complacency. We have to remain humble and be prepared to adapt and respond to new and continued challenges as we move into 2021. “
Jonathan Stoye, a virologist at the Francis Crick Institute in London, explained that variants and new strains typically arise in viruses as “a result of errors in copying viral genetic material”. This, he said, led to small changes in virus proteins.
We should all be very concerned about new strain - and we must reduce contact further if we're going to prevent deaths, says expert
A scientist from the group Nervtag, which provided evidence of a mutant strain of coronavirus in the UK, has issued a warning to the public.
"I'm sorry to say we should all be very concerned [about the new strain]," Professor Andrew Hayward said.
"This is really terrible news in terms of the pandemic... If the vaccine is the best news, this is the worst news and we really, really need to tighten down the hatches to stop the spread of this strain while we are vaccinating as many people as possible."
He explained it is "hard to overestimate" the impact of a new strain which is 70% more transmissible, saying the number of deaths from COVID-19 is linked to how transmissible the virus is and how much social contact we have.
"If we're going to prevent very many deaths, we're going to need to reduce contact further," he said.
Pointing to how the second national lockdown has not managed to impact cases much in some areas, Professor Hayward said: "What this shows is even though we were having relatively strong measures that were enough to suppress the previous virus, they weren't enough to suppress this."
He said areas with lower levels of infections are possibly three weeks behind those with the highest levels, meaning more places could soon face tougher restrictions.
Explaining how Nervtag discovered the new strain, Professor Hayward said there is evidence people infected with the strain VUI-202012/01 have higher levels of virus when they are swabbed. ]
Former chief scientific adviser calls for lockdown and says 'we shouldn't wait'
In an interview where he was heavily critical of the government's response to the pandemic, former chief scientific adviser Sir David King has told Sky News there is now "only one course of action" to deal with the new strain of coronavirus.
"I think there's no doubt about it - we need to go into lockdown and we need to go into lockdown sooner than the government is tending to do," he said.
Sir David said it is important to act quickly to stop a surge in infections, and he believes "almost certainly" the new variant is spreading across the country already.
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