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The first reported U.S. case of the COVID-19 variant that's been seen in the United Kingdom has been discovered in Colorado, Gov. Jared Polis announced Tuesday.

The variant was found in a man in his 20s who is in isolation southeast of Denver in Elbert County and has no travel history, state health officials said.

Elbert County is a mainly rural area of rolling plains at the far edge of the Denver metro area that includes a portion of Interstate 70, the state’s main east-west highway.

The Colorado State Laboratory confirmed the virus variant, and the Centers for Disease Control and Prevention was notified.

And what we need to find out

Canada reports its first cases of new coronavirus variant

About the new U.K. coronavirus variant?

Scientists in the U.K. believe the variant is more contagious than previously identified strains. The vaccines being given now are thought to be effective against the variant, Colorado health officials said in a news release.

Public health officials are investigating other potential cases and performing contact tracing to determine the spread of the variant throughout the state.

“There is a lot we don’t know about this new COVID-19 variant, but scientists in the United Kingdom are warning the world that it is significantly more contagious. The health and safety of Coloradans is our top priority, and we will closely monitor this case, as well as all COVID-19 indicators, very closely," Polis said.

Polis and state health officials are expected hold a news conference Wednesday.

The discovery of the new variant led the CDC to issue new rules on Christmas Day for travelers arriving to the U.S. from the U.K., requiring they show proof of a negative COVID-19 test.

Worry has been growing about the variant since the weekend before Christmas, when Britain’s prime minister said a new strain of the coronavirus seemed to spread more easily than earlier ones and was moving rapidly through England. The nation's first variant case was identified in southeast England.

Dozens of countries barred flights from the U.K., and southern England was placed under strict lockdown measures. Scientists say there is reason for concern but the new strains 

Japan announced Monday it would bar entry of all nonresident foreign nationals as a precaution against the new strain.

New variants of the coronavirus have been seen almost since the virus was first detected in China nearly a year ago. It is common for viruses to undergo minor changes as they reproduce and move through a population. The slight modifications are how scientists track the spread of a virus from one place to another.

But if the virus has significant mutations, one concern is that current vaccines might no longer offer the same protections. Although that’s a possibility to watch for over time with the coronavirus, experts say they don’t believe it will be the case with the latest variant.

The U.K. variant, known as B.1.1.7, has also been found in Canada, Italy, India and the United Arab Emirates.

South Africa has also discovered a highly contagious COVID-19 variant that is driving the country’s latest spike of confirmed cases, hospitalizations and deaths. The variant, known as 501.V2, is dominant among the newly confirmed infections in South Africa, according to health officials and scientists leading the country’s virus strategy.

The Associated Press

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The first reported U.S. case of the COVID-19 variant that’s been seen in the United Kingdom has been discovered in Colorado. The state’s Gov. Jared Polis and health officials announced Tuesday that the case was found in a man in his 20s who's in isolation and has no travel history.

First reported U.S. case of COVID-19 variant found in Colorado

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