Where is the next COVID variant, pi? A virologist explains why omicron is continuing to dominate


The omicron variant of SARS-CoV-2, the virus that causes COVID-19, has now been around for more than a year. Before omicron became dominant, there had been a quick succession of named variants of concern—from alpha, to beta, to gamma, to delta. But now it seems as though we’re facing a never-ending string of letter and number combinations denoting the children and grandchildren of omicron: BA.2, BA.2.75, BA.5, BQ.1, BF.7, XBB—the list goes on.

Vaccine and prior SARS-CoV-2 infection confer long-lasting protection against omicron BA.5

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