The 'highly mutated' COVID variant BA.2.86 — known as Pirola — has landed in Australia
A new COVID variant nicknamed "Pirola" has been detected in Australia after sparking a sped-up vaccination program in the United Kingdom.
A new variant in itself is not unusual — viruses evolve and change over time, and new mutated versions pop up frequently.
However, this one caught the attention of scientists.
What is BA.2.86, aka the Pirola variant?
According to the British Medical Journal, Pirola appears to have evolved from the Omicron subvariant BA.2, which was widely circulating in early 2022.
One case has been detected in Australia, in a laboratory in Western Australia, genomic sequencing data shows.
However, there could be more out there because only a fraction of all COVID-19 infections get submitted to for testing.
WA's health department said the case in Australia was "closely related – without significant differences – to those BA.2.86 strains reported from other countries".
The World Health Organization labelled BA.2.86 a "variant under monitoring" — which means they're keeping a close eye on it — in mid-August.
It has not been formally called a "variant of concern" yet or given a Greek name like Omicron or Delta.
Pirola is an informal nickname the variant received on social media from a community who track COVID variants.
Where did this new variant come from?
While new variants emerge all the time, scientists became interested in this one because of how mutated it was compared to its predecessor.
It has 33 changes to its spike proteins — the pointy part of the virus that infects human cells — compared to BA.2, analysis from China found.
To put that into context, that's the same magnitude of changes that made Omicron so distinct from the Delta variant which dominated the world in late 2020, the US Centers for Disease Control said.
https://www.abc.net.au/news/2023-09-21/new-covid-strain-variant-pirola-ba-2-86-in-australia-symptoms/102873304