Omicron’s sister variant spreads faster. So why did the one we call Omicron hit first?

Omicron’s sister variant spreads faster. So why did the one we call Omicron hit first? – STAT

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[Preprint] Study suggests SARS-CoV-2 Omicron subvariants BA.2 is even more transmissible than the original variant.

BA.2 is like Omicron’s sister. Here’s what we know about it so far – The Conversation