It's called 'BA.2' — a sibling of the first omicron variant that swept the world. So many questions. Researchers are looking for answers:
So the big question now is, will that small difference be enough for this variant to lengthen the ongoing surge in the U.S., as it has in Denmark?You can think of BA.2 as a sibling of BA.1, Hodcroft says. They share a bunch of mutations — about 30 or so — but they also have a bunch of mutations that are unique.
Back in November, when scientists in South Africa and Botswana discovered omicron, they didn't find just one version. They found three, called BA.1, BA.2 and BA.3 by the Phylogenetic Assignment of Named Global Outbreak Lineages at the University of Edinburgh.
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