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The samples, tested in the Lancet laboratory, all bore a large number of mutations, especially on the spike protein

Laboratories testing for Covid-19 weren’t able to detect the virus’s S-gene, which creates the spike protein that enables the pathogen to enter human cells and spread. Sequencing by virologists found it had mutated

Against severe disease. i do not want people to panic at this stage. if vaccine effectiveness is reduced, as seems pretty likely to some extent, the biggest effects are likely to be in preventing infections and hopefully there will be smaller effects on preventing severe disease. can we test for it? omicron has a different genetic signature to delta, which often shows up on pcr tests. but only about half of uk labs can pick up this signal. gene sequencing will also help track the spread of the variant here. we all want to know how much of a threat omicron poses, but it will be two to three wee...

I do not want people to panic at this stage. if vaccine effectiveness is reduced, as seems pretty likely to some extent, the biggest effects are likely to be in preventing infections and hopefully there will be smaller effects on preventing severe disease. can we test for it? omicron has a different genetic signature to delta, which often shows up on pcr tests. but only about half of uk labs can pick up this signal. gene sequencing will also help track the spread of the variant here. we all want to know how much of a threat omicron poses, but it will be two to three weeks before science gives ...

The biggest effects are likely to be in preventing infections and hopefully there will be smaller effects on preventing severe disease. can we test for it? omicron has a different genetic signature to delta, which often shows up on pcr tests. but only about half of uk labs can pick up this signal. gene sequencing will also help track the spread of the variant here. we all want to know how much of a threat omicron poses, but it will be two to three weeks before science gives us those answers. fergus walsh, bbc news. so, how worried should we be about the new variant? i've been speaking to dr wi...