On: XBB is a variant of omicron and has already shown ...

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FYI:

What We Know About All the New Covid Variants : https://nymag.com/intelligencer/article/what-to-know-new-cov...

CDC - SARS-CoV-2 Variant Classifications and Definitions : https://www.cdc.gov/coronavirus/2019-ncov/variants/variant-c...