Omicron infection: What are the symptoms?

Written by Maria Cohut, Ph.D. on January 10, 2022 — Fact checked by Harriet Pike, Ph.D.


As infections of the Omicron variant of SARS-CoV-2 — the virus that causes COVID-19 — continue to spread around the world, there have been reports that symptoms, in some respects, are different from those of Delta variant infections. Do symptoms really differ? What should you look out for?


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On November 26, 2021, the World Health Organization (WHO) indicated a new SARS-CoV-2 variant of concern, which became known as OmicronTrusted Source.

The variant has caused concern among health authorities because it appears to be highly transmissibleTrusted Source and likelier to reinfect.

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