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OMICRON VARIANT MAY BE THE BABY OF TWO PREVIOUS COVID-19 LINEAGES

Did two previous COVID lineages create the omicron variant?

By Herb Scribner@HerbScribner Feb 2, 2022, 3:30pm MST


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Did two previous COVID lineages create the omicron variant? Illustration by Alex
Cochan, Deseret News

The omicron variant of the novel coronavirus may have been borne from a
recombination of two earlier COVID-19 lineages, a new study suggests.

The study — available on the Research Square preprint platform ahead of peer
review — said that the omicron variant is, potentially, a combination of two
previous SARS-CoV-2 lineages.

 * Those lineages would have been BA.1 and B.35.
 * BA.1 is seen in around 4.17% of all COVID-19 sequences.
 * B.35, meanwhile, has only been seen in 0.0019% of sequences.
 * The BA.1 lineage is the parent lineage that, when combined with BA.35,
   created the current omicron variant.

Related

3 REASONS WHY YOUR OMICRON VARIANT INFECTION HASN’T BEEN SEVERE

WHY THIS UTAH DOCTOR SAYS RAMPANT COVID-19 IS A PANDEMIC OF ‘PERSONAL MORAL
CHARACTER’

To find this, the researchers looked at more than 4,200 genome sequences from
the Global Initiative on Sharing Avian Influenza Data repository and National
Center for Biotechnology Information.

 * “The authors observed that in the origin and evolution of the SARS-CoV-2
   Omicron variant, at least one recombination event had occurred,” according to
   News Medical.



Why it matters: “To summarize, the recombination event is pivotal for the
evolution and diversity of coronaviruses as it allows the viruses to adapt to
new host environments and overcome selection pressure,” according to News
Medical. “Therefore, research and public health measures should focus on these
findings and target the recombination events to prevent the emergence of newer
SARS-CoV-2 strains in the future.”

The bigger picture: More recently, the omicron variant seems to have split into
another lineage, called BA.2, as I reported for the Deseret News.

 * Experts said the BA.2 version of the omicron variant has a “growth advantage”
   that will allow it to spread farther.




NEXT UP IN CORONAVIRUS

 * The difference in hospitalization for unvaccinated and vaccinated for the
   omicron variant
 * Why omicron variant patients are experiencing ‘different’ symptoms compared
   to each other
 * Is too much mucus an omicron symptom?
 * Omicron subvariant BA.2 is just as severe as the original omicron
 * We may have to ‘tolerate’ COVID-19 spread from the omicron variant, expert
   says
 * Is muscle pain an omicron variant symptom?


MOST READ

 1. 
    7 signs you might have had omicron variant without knowing it There’s a
    chance you might have been sick with the omicron variant without knowing it.
 2. 
    2 new omicron symptoms you won’t realize are from COVID The omicron variant
    could impact more parts of your body than your throat, lungs and brain.
 3. 
    Is muscle pain an omicron variant symptom? An omicron variant symptoms can
    be found in the knee area.


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