DENVER — A case of the more contagious coronavirus variant first discovered in Britain has been discovered in Colorado, Gov. Jared Polis said on Tuesday. It is the first confirmed case of the variant in the United States.
The case was detected in a male in his 20s with no travel history, Mr. Polis said. The man was in isolation in Elbert County, southeast of Denver, he said.
There have not been any close contacts identified as of Tuesday, Mr. Polis said, adding that health officials were working to identify potential cases through contact tracing interviews.
The Colorado State Laboratory confirmed the case and notified the Centers for Disease Control and Prevention, he said.
The variant first discovered in Britain is thought to be more contagious, though there has been no evidence to suggest that it is more deadly nor resistant to the vaccines that have been deployed across the United States and Europe.
Countries around the world have implemented stricter protocols for travelers entering from the United Kingdom. A new rule in the United States mandating that incoming travelers from the U.K. — including American citizens — show proof of a negative coronavirus test upon entry went into effect on Monday.