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When the coronavirus runs rampant, mutations and new strains are more likely, experts say. That may be what happened in the UK.


All viruses change over time. The more people a virus infects, the more chances it has to mutate into a new variant.
So countries in which the coronavirus is spreading more widely are more likely to see problems like this, experts say.
The surest way to boost the chances of a worrisome coronavirus mutation: let it spread unchecked.
“More infected people means more opportunity for the development of mutations. More movement of people … means new variants can spread faster,” Dr. Shira Doron, an infectious-disease specialist at Tufts Medical Centre, told Business Insider.
When viruses infect a body, they replicate. More spread means more replication, which raises the likelihood of genetic errors. So in places where transmission is high, we are more likely to see a harmful variant emerge, experts say. ....

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What we know about the U.K.'s new novel coronavirus variant


 
TORONTO
Lockdowns have been initiated in the United Kingdom, as Canada as well as several European Union countries cancel flights after information was revealed about a new variant of the virus that causes COVID-19. Researchers are rigorously examining how the mutations arose, what it means for vaccines, and updating their understanding of the virus.
In a tweet, Prime Minister Justin Trudeau announced Sunday evening that Canada would be restricting flights from the U.K. for at least 72 hours. 
This afternoon, I convened a meeting with the Incident Response Group. We focused on the new variant of COVID-19 identified in the UK, and we have decided to implement new border restrictions in order to keep you - and people right across the country - safe, the prime minister wrote on Twitter. ....

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