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Omicron May Be Less Likely To Cause Smell Loss Than Other Covid Variants, Researchers Say

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May 10, 2022
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Omicron May Be Less Likely To Cause Smell Loss Than Other Covid Variants, Researchers Say
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Topline

Anecdotal proof means that the coronavirus omicron variant could also be much less possible than different variants to trigger odor loss, a standard Covid-19 symptom with doubtlessly critical implications for mind operate, in accordance with a paper printed Could 3 by Otolaryngology–Head and Neck Surgical procedure.

Scent loss was probably the most widespread signs of Covid-19 through the early levels of the pandemic.


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Key Information

In comparison with the unique coronavirus pressure, danger of odor and style loss seems 50% decrease for the alpha variant, 66% decrease for the delta variant and 83% decrease for the omicron variant, Virginia Commonwealth College researchers stated.

These outcomes are “excellent information,” indicating that new variants will put Covid-19 sufferers at a lot decrease danger of odor and style loss, stated Dr. Daniel Coelho, lead writer of the paper, in an announcement.

Covid-19-associated odor loss has been linked to despair signs and dementia, so odor loss shouldn’t be handled as a minor symptom, Coelho stated.

Whereas lack of odor and style remains to be a probable signal of Covid-19 an infection, the reverse is not true, so individuals shouldn’t assume they don’t have the virus simply because their senses of odor and style are working usually, Coelho stated.

Researchers analyzed knowledge from 616,318 Covid-19 sufferers gathered by variant-tracking mission CoVariants.

Essential Quote

“This isn’t nearly having the ability to take pleasure in a positive bottle of wine once more; it’s about security and preserving your high quality of life,” Coelho stated in an announcement.

Key Background

Throughout the first two years of the pandemic, odor loss was one of many strongest indicators of Covid-19 an infection, affecting 60% of individuals age 16-65 who caught the illness, in accordance with the COVID Symptom Study, a U.Okay.-based analysis initiative. An April JAMA Neurology study discovered that Covid-19 odor loss was related to harm to part of the mind that processes odor. Harm to axons—the elements of nerve cells that transmit indicators to different cells—was about 60% extra extreme amongst sufferers with Covid-19 than amongst sufferers with out the illness, researchers discovered, suggesting that Covid-19-associated odor loss could also be everlasting.

What We Don’t Know

It stays unclear how Covid-19 causes odor loss. The authors of the JAMA Neurology research concluded that harm to the mind wasn’t prompted straight by the virus, and may need been prompted not directly by irritation to the world. Quite a few therapies for Covid-19 odor loss are presently below testing, starting from inserting plasma-saturated sponges up the nostril to taking anti-inflammatory drugs. Coelho and different Virginia Commonwealth College researchers are engaged on an olfactory implant that might intention to revive odor loss like a cochlear implant restores listening to loss.

Large Quantity

1.6 million. That’s about what number of Individuals had long-term Covid-19-associated odor loss as of November, in accordance with Smithsonian Journal.

Additional Studying

“Covid Scent Loss Linked To Harm In Mind, Research Finds” (Forbes)

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Tags: CovidlossOmicronresearchersSmellVariants
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