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The UK has recorded 11,007 new coronavirus cases in a day – up by almost 2,000 in 24 hours.

This is the biggest single-day increase in four months, with the previous highest jump taking place on February 19 when 12,027 cases were announced.

Deaths have also doubled in a week after 19 further fatalities were revealed today, compared with seven last Thursday.

It comes as cases spike across the country due to the rapid spread of the Delta variant, which was first detected in India.

New research by Imperial College London shows the bulk of infections is being fuelled by children aged between five and 12, as well as younger adults aged between 18 and 24.

Infections in these age groups around five times higher when compared to those over 65, the researchers said.

Coronavirus cases are rising across the country

The study commissioned by the Government found that infections have increased 50 per cent between May 3 and June 7, coinciding with the rise of the Delta coronavirus variant.

Data from nearly 110,000 swab tests carried out across England between May 20 and June 7 suggests Covid-19 cases are doubling every 11 days, with the highest prevalence in the North West and 1 in 670 people infected.

The experts from Imperial College London said their findings show a “rapid switch” between the Alpha (Kent) variant, which first appeared in the UK in September 2020, and the Delta variant in the last few weeks, with the latter accounting for up to 90 per cent of all coronavirus cases.

But they stressed that the country is in a much different position than autumn last year when an exponential growth triggered a second wave of coronavirus infections.

Meanwhile new statistics from the ZOE Covid Study (ZOE) show that positive tests are much more likely in people who have not had a vaccine dose.

According to researchers, the current risk of catching the virus among unvaccinated people is one in 2,093.

New statistics show positive tests are much more likely in people who have not been vaccinated
(Image: AFP via Getty Images)

This then rises to one in 5,508 for those who have had one jab – before surging to one in 16,101 for fully vaccinated Brits.

New measures including surge testing and maximising vaccine uptake are rolled out in Birmingham, Liverpool and Cheshire to tackle the Delta Covid variant.

The package also includes additional support in Birmingham, Blackpool, Cheshire East, Cheshire West and Chester, Liverpool City Region and Warrington to slow down the spread of the concerning strain.