THE US health authority has warned Americans against travelling to the UK amid a surge in Covid cases.

The Centers for Disease Control and Prevention (CDC) has raised the UK to the highest threat level in a travel notice.

The UK is now considered level 4, a very high threat, by the US authority.

It comes as 39,950 people tested positive for Covid-19, according to the latest government figures. This is the highest figure released on a Monday since January 11.

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The US authority raised the alert level due to the rising numbers, and the presence of the Delta variant - which can infect those who have had two vaccinations.

The travel notice reads: “Avoid travel to the United Kingdom.

“If you must travel to the United Kingdom, make sure you are fully vaccinated before travel.

The National:

Travellers in the US have been warned to avoid the UK due to rising cases

“Because of the current situation in the United Kingdom, even fully vaccinated travelers may be at risk for getting and spreading COVID-19 variants.”

Level 4 is the highest threat level the CDC can put in place, and tells Americans to avoid traveling to the area completely.

Zimbabwe, the British Virgin Islands, Indonesia and Fiji were also upgraded to a level 4 threat by the health authority earlier today.

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It comes as England celebrates its “freedom day” completely dropping all coronavirus rules such as masks, social distancing and qr-code sign-ins.

We told how Nicola Sturgeon criticised the plan and said it was “not sensible” given the rising number of covid cases.

And now, both Prime Minister Boris Johnson and Rishi Sunak are in isolation after being pinged by the NHS as close contacts of health secretary Sajid Javid.

The National:

A level 4 threat is the highest level the CDC uses to warn travellers

The pair had initially tried to skip quarantine rules by taking part in a pilot where they would only have to test once a day, but a furious public backlash to the announcement forced them into a U-turn.

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Johnson then tried to claim he had only “briefly” considered the pilot in a video on Twitter later that day.

However, the video did not go down well on social media, as users piled on to hit back at the PM for trying to fudge the rules.