Reports of new coronovirus strains in the UK and South Africa that begin to spread easily cause alarm, but virus experts say it is unclear what is the matter or whether they pose any concern for vaccines or Causes more serious illnesses.
Viruses develop naturally as they move through populations, some compared to others. This is one of the reasons why we need a fresh flu shot every year.
New forms, or strains, of the virus that caused Kovid-19 have been seen almost since it was first found in China about a year ago.
On Saturday, Prime Minister Boris Johnson announced new sanctions due to new tensions. Many EU countries and Canada were banning or limiting some flights from Britain to try to limit any spread.
What is known about the situation here.
What about England’s tension?
Health experts in the UK and US said that stress infects more easily than others, but there is no evidence yet that it is more deadly.
The British government’s chief scientific adviser, Patrick Valence, said that stress was “rapidly escalating and becoming an effective version” due to more than 60 per cent infection in London in December.
The strain is also because it has many mutations – about two dozen – and some are on spikey proteins that the virus uses to connect and infect cells. The spike that targets current vaccines.
Dr. Ravi Gupta, who studies the virus at the University of Cambridge in England, said, “I am worried about this,” certainly, but it is too soon to know how important it will prove to be. He and other researchers posted a report on one of its websites, which scientists use to quickly share events, but the paper has not been formally reviewed or published in a journal.
“I’m worried about this, definitely.”
Dr. Ravi Gupta
HViruses often receive small changes of a letter or two in their genetic alphabet through normal development. Slightly modified stress can become most common in any country or region, either because it is a stress that has previously taken hold there or because the events of the “super spreader” helped provoke it.
A major concern is when a virus mutates by altering the proteins on its surface to help drugs or the immune system escape.
“Emerging evidence” suggests that may have started with the new coronovirus, Trevor Bedford, a biologist and genetics specialist at the Fred Hutchinson Cancer Research Center in Seattle. “We have now seen the emergence and spread of several variants” that suggest this, and some antibodies show resistance to treatment, he said.
What other strains have emerged?
N April, researchers in Sweden found a virus with two genetic changes that seemed to make it nearly two times more infectious, Gupta said. He said that around 6,000 cases had been reported worldwide, most of them in Denmark and England.
Many forms of that tension have now changed. Information was received in some people from mink farms in Denmark. A new South African tension has seen the first two changes, along with some others.
Gupta said that in the UK there are two changes in one and more, including eight spike proteins. It has been called the “variant under investigation” because its importance is not yet known.
The strain was identified in southeastern England in September and has since been roaming the region, a World Health Organization official on Sunday told the BBC.
Will a new strain reduce vaccines?
Probably not, former US Food and Drug Commissioner Scott Gottlieb said on CBS’s “Face the Nation” on Sunday.
Vivek Murthy, Surgeon General nominee of President-Elect Joe Biden, said on NBC’s “Meet the Press” on Sunday that “there is no reason to believe that vaccines that have been developed will not be effective against this virus as well.” . “
Several experts have noted that vaccines cause widespread responses by the immune system to spike proteins.
On Sunday, CNN’s “State of the Union” stated that the possibility that the new vaccines would be resistant to existing vaccines, but not “unusable”, led the U.S. government’s vaccine delivery effort, leading science advisor Dr. Monsep Saloi said.
“So far, I don’t think there has been any single version that would be resistant,” he said. “I think it is unlikely to have escaped vaccine immunity specifically in the UK.”
Bedford wrote on Twitter, “I’m not worried” because the genetic code would require a lot of changes, not just one or two mutations to reduce. But vaccines can heal over time, as changes occur, and changes must be monitored more closely, he wrote.
Murthy said the new strain does not change public health advice to wear masks, wash hands and maintain social distance.