Coronavirus cases in England are “rising exponentially” among unvaccinated younger people and those yet to have their second jab, according to scientists.

The analysis, from the React-1 study, found that infections increased by 50 per cent between 3 May and 7 June, coinciding with the rise of the Delta variant that is now dominant in the UK.

Data from nearly 110,000 swab tests carried out across England between 20 May and 7 June suggests Covid cases are doubling every 11 days, with the highest prevalence in the North West and on average one in 670 people infected.