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The Times

When is a COVID mutation a new variant, and when is it a subvariant? And what’s a recombinant?

  • Written by Paul Griffin, Associate Professor, Infectious Diseases and Microbiology, The University of Queensland
When is a COVID mutation a new variant, and when is it a subvariant? And what’s a recombinant?Shutterstock

We’ve all become familiar with virus mutations over the course of the pandemic, and can all probably list off the COVID variants including Alpha, Delta and Omicron. But now we’re hearing more and more about subvariants, as Omicron mutates into Omicron BA.2, Omicron BA.4, Omicron XE, and more.

We know the virus is mutating as...

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