Thank you.
Dr. Annan, in an April 24, 2020, op-ed in The Hill Times, you wrote about scientists that:
...they've started to use the viral genome and the mutations it accumulates like a series of fingerprints, tracking the virus' spread and transmission patterns within communities and around the world.
Genomics tracks these changes so we may also determine if new, potentially more severe strains are emerging.
Have any “new, potentially more severe strains” of SARS—CoV-2 been identified to date?