Another 9,985 people in Britain have tested positive for COVID-19, bringing the total number of coronavirus cases in the country to 4,154,562, according to official figures released Thursday.

A person wearing a mask walks across the Millennium Bridge in London, Britain, on March 9, 2020. As of 9 a.m. (0900GMT) on Monday, 319 people in Britain have tested positive for the novel coronavirus, up from 273 at the same point Sunday, according to the Department of Health and Social Care. (Photo by Tim Ireland/Xinhua)

The country also reported another 323 coronavirus-related deaths. The total number of coronavirus-related deaths in Britain now stands at 122,070. These figures only include the deaths of people who died within 28 days of their first positive test.

The latest figures were revealed as more than 18.6 million people in Britain have been given the first jab of the coronavirus vaccine.

Earlier Thursday, Britain's COVID-19 alert level was downgraded as the threat of the National Health System (NHS) being overwhelmed declined.

Britain's chief medical officers said Thursday that the coronavirus alert level should move from Five to Four, which means that transmission is now "high or rising exponentially".

Previously, at level Five, there was "a risk of healthcare services being overwhelmed".

England is currently under the third national lockdown since outbreak of the pandemic in the country. Similar restriction measures are also in place in Scotland, Wales and Northern Ireland.

To bring life back to normal, countries such as Britain, China, Germany, Russia and the United States have been racing against time to roll out coronavirus vaccines.