Covid cases in England doubling every 11 days as Delta variant takes hold

Scientists say cases rising exponentially but vaccine progress should help reduce increase

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Covid-19 cases are rising exponentially across England driven by younger and mostly unvaccinated age groups, according to scientists.

A study commissioned by the government found that infections increased by 50% between 3 May and 7 June, coinciding with the rise of the Delta coronavirus variant that is now dominant in the UK.