BBCNEWS BBC News November 27, 2021 02:03:00
And deaths here last winter. the delta variant, first detected in india, was even more transmissible, and is currently the dominant strain worldwide. on paper, the new variant looks worrying, with twice the number of mutations found on delta. around 30 of these are in the spike protein — the key the virus uses to unlock our cells — and these changes may help it evade our body's defences. but so far, we don't know whether the variant causes more severe disease, whether vaccines will be less effective or drugs won't work. it's the sheer number and type of mutations that has scientists here t...