As health officials in the United States announced a second and possibly a third person infected with a new, more transmissible strain of the SARS-CoV-2 virus, infectious diseases experts are feeling a sense of déjà vu all over again.

A little less than a year ago, the early response to the coronavirus crisis was stifled by an inability to scale up testing to detect the virus and curb its spread. Now, once again, it’s unclear how prevalent the new strain, which first surfaced in the U.K., might be in the U.S. Already a possible and a probable case have been detected in Colorado and one case has been reported in California. But it’s likely the variant’s spread hasn’t stopped there.

Read more at STAT…