Local health officials in the western state of Colorado on Tuesday announced the United States' first known case of a potentially more transmissible coronavirus variant spreading in Britain.A man in his 20s, who has no travel history, was confirmed to have contracted the virus variant and is recovering in isolation, the office of the state governor said in a press release."The individual has no close contacts identified so far, but public health officials are working to identify other potential cases and contacts through thorough contact tracing interviews," it said."There is a lot we don't…READ FULL ARTICLE