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What are the Brazil, South Africa and UK variants and will vaccines work? What are the Brazil, South Africa and UK variants and will vaccines work?
(1 day later)
A Covid variant first identified in Brazil has been found in the UK. Four more cases of a Covid variant first identified in Brazil have been found in the UK, bringing the total number to 10.
Public health officials have identified and contacted the six people found to be infected and are doing testing to see if it has spread to more people. Three are in South Gloucestershire - linked to previous cases seen there - and one is in Bradford, West Yorkshire. This individual had recently returned to the UK from Brazil.
Some variants, like this one, appear to be more contagious and there are concerns current vaccines may not work as well.Some variants, like this one, appear to be more contagious and there are concerns current vaccines may not work as well.
What are these new variants?What are these new variants?
There are many thousands of different versions, or variants, of Covid circulating.There are many thousands of different versions, or variants, of Covid circulating.
Apart from the Brazil variant (also known as P.1), concerns focus on a few:Apart from the Brazil variant (also known as P.1), concerns focus on a few:
A UK or Kent variant (also known as B.1.1.7) now dominant in much of Britain, has spread to more than 50 countries and appears to be mutating againA UK or Kent variant (also known as B.1.1.7) now dominant in much of Britain, has spread to more than 50 countries and appears to be mutating again
A South Africa variant (B.1.351) found in at least 20 other countries, including the UKA South Africa variant (B.1.351) found in at least 20 other countries, including the UK
It's not unexpected that new variants have developed - all viruses mutate as they make copies of themselves to spread and thrive.It's not unexpected that new variants have developed - all viruses mutate as they make copies of themselves to spread and thrive.
Most of these differences are inconsequential. A few can even be harmful to the virus's survival. But some can make it more infectious or threatening.Most of these differences are inconsequential. A few can even be harmful to the virus's survival. But some can make it more infectious or threatening.
Coronavirus variants: The science explainedCoronavirus variants: The science explained
Are the new ones more dangerous?Are the new ones more dangerous?
There is no evidence that any of them cause much more serious illness for the vast majority of people who become infected.There is no evidence that any of them cause much more serious illness for the vast majority of people who become infected.
As with the original version, the risk is highest for people who are elderly or have significant underlying health conditions.As with the original version, the risk is highest for people who are elderly or have significant underlying health conditions.
For the UK variant there is some research suggesting it may be associated with a 30% higher risk of death. The evidence is not conclusive, however.For the UK variant there is some research suggesting it may be associated with a 30% higher risk of death. The evidence is not conclusive, however.
Measures such as washing your hands, keeping your distance from other people and wearing a face covering will still help prevent infections. Because the new variants appear to spread more easily it is important to be extra vigilant.Measures such as washing your hands, keeping your distance from other people and wearing a face covering will still help prevent infections. Because the new variants appear to spread more easily it is important to be extra vigilant.
What's happening to the virus?What's happening to the virus?
The UK, South Africa and Brazil variants could be much more contagious or easy to catch.The UK, South Africa and Brazil variants could be much more contagious or easy to catch.
All three have undergone changes to their spike protein - the part of the virus which attaches to human cells.All three have undergone changes to their spike protein - the part of the virus which attaches to human cells.
As a result, they seem to be better at infecting cells and spreading.As a result, they seem to be better at infecting cells and spreading.
Experts think the UK or "Kent" strain emerged in September and may be up to 70% more transmissible or infectious. The latest research by Public Health England puts it between 30% and 50%.Experts think the UK or "Kent" strain emerged in September and may be up to 70% more transmissible or infectious. The latest research by Public Health England puts it between 30% and 50%.
The South Africa variant emerged in October, and has more potentially important changes in the spike protein. Experts recently found a small number of cases of the UK variant that have one of these more concerning changes too.The South Africa variant emerged in October, and has more potentially important changes in the spike protein. Experts recently found a small number of cases of the UK variant that have one of these more concerning changes too.
It involves a key mutation - called E484K - that may help the virus evade parts of the immune system, called antibodies, that can fight coronavirus based on experience from prior infection or a vaccine.It involves a key mutation - called E484K - that may help the virus evade parts of the immune system, called antibodies, that can fight coronavirus based on experience from prior infection or a vaccine.
Where has the South Africa variant been found in the UK?Where has the South Africa variant been found in the UK?
South Africa coronavirus variant: What's the risk?South Africa coronavirus variant: What's the risk?
UK variant has mutated again, scientists sayUK variant has mutated again, scientists say
The Brazil variant emerged in July and has this E484K mutation too.The Brazil variant emerged in July and has this E484K mutation too.
Will vaccines still work?Will vaccines still work?
Current vaccines were designed around earlier versions of coronavirus, but scientists believe they should still work, although perhaps not quite as well.Current vaccines were designed around earlier versions of coronavirus, but scientists believe they should still work, although perhaps not quite as well.
A recent study suggests the Brazilian variant may be resisting antibodies in people who should have some immunity because they have caught and recovered from an earlier version of coronavirus.A recent study suggests the Brazilian variant may be resisting antibodies in people who should have some immunity because they have caught and recovered from an earlier version of coronavirus.
Early lab results, however, suggest the Pfizer vaccine can protect against the new variants, although slightly less effectively.Early lab results, however, suggest the Pfizer vaccine can protect against the new variants, although slightly less effectively.
Two new coronavirus vaccines that could be approved soon - one from Novavax and another from Janssen - appear to offer some protection too.Two new coronavirus vaccines that could be approved soon - one from Novavax and another from Janssen - appear to offer some protection too.
Data from the Oxford-AstraZeneca vaccine team suggests it protects just as well against the new UK variant. It offers less protection against the South Africa variant - although it should still protect against severe illness.Data from the Oxford-AstraZeneca vaccine team suggests it protects just as well against the new UK variant. It offers less protection against the South Africa variant - although it should still protect against severe illness.
Early results from Moderna suggest its vaccine is effective against the South Africa variant, although the immune response may not be as strong or long-lasting.Early results from Moderna suggest its vaccine is effective against the South Africa variant, although the immune response may not be as strong or long-lasting.
Variants could emerge in the future that are different again.Variants could emerge in the future that are different again.
Even in the worst case scenario, vaccines could be redesigned and tweaked to be a better match - in a matter of weeks or months, if necessary, say experts.Even in the worst case scenario, vaccines could be redesigned and tweaked to be a better match - in a matter of weeks or months, if necessary, say experts.
As with flu, where a new shot is given each year to account for any changes in circulating flu viruses, something similar could happen for coronavirus.As with flu, where a new shot is given each year to account for any changes in circulating flu viruses, something similar could happen for coronavirus.
What is being done about it?What is being done about it?
More variants will emerge.More variants will emerge.
Scientists around the world are on the look-out and any important ones will be closely studied and monitored.Scientists around the world are on the look-out and any important ones will be closely studied and monitored.
Experts are updating coronavirus vaccines. The UK Government has announced a deal with biopharmaceutical company CureVac to develop vaccines against future variants, with a pre-order of 50 million doses.Experts are updating coronavirus vaccines. The UK Government has announced a deal with biopharmaceutical company CureVac to develop vaccines against future variants, with a pre-order of 50 million doses.