Covid-19: UK study suggests Delta subvariant less likely to cause symptoms

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The entrance to a Covid-19 testing centre is pictured in Barnet, London April 14, 2021. ― Reuters pic Follow us on Instagram and subscribe to our Telegram channel for the latest updates. LONDON, Nov 18 ― A subvariant of Delta that is growing in Britain is less likely to lead to symptomatic Covid-19 infection, a coronavirus prevalence survey found, adding that overall cases had dropped from a peak in October.The Imperial College London REACT-1 study, released yesterday, found that the subvariant, known as AY.4.2, had grown to be nearly 12 per cent of samples sequenced, but only a third had “classic” Covid symptoms, compared with nearly a half of those with the currently dominant Delta lineage AY.4.Two-thirds of people with AY.4.2 had “any” symptom, compared with more than three-quarters with AY.4.AY.4.2 is thought to be slightly more transmissible, but it has not been shown to ca…