SARS-CoV-2 Omicron variant - Wikipedia
In November 2021, the World Health Organization 's Technical Advisory Group on SARS-CoV-2 Virus Evolution declared PANGO lineage B.1.1.529 a variant of concern and designated it with the Greek …
What do we know about the new Omicron subvariant of COVID, …
May 30, 2025 · An infectious diseases expert answers questions about a new form of the Omicron variant of COVID-19 that has recently appeared in the United States.
Omicron Variant Symptoms: Guide & How to Treat Them - Ada
Jan 31, 2025 · The Omicron variant is a mutation of the coronavirus that is currently the dominant COVID-19 variant worldwide. Since its first identification in late 2021, many subvariants of Omicron …
Omicron and its Subvariants: A Guide to What We Know
Sep 1, 2023 · Tracking Omicron and its variants can easily become confusing—even overwhelming, but Yale Medicine follows these variants, and the CDC provides weekly updates to track them.
WHO EMRO - The Omicron variant: what we need to know
WHO designated Omicron as a variant of concern (VOC) due to its many mutations, leading to higher risk of transmission and possible resistance to vaccination.
Omicron Variant: Symptoms and Treatment - WebMD
Aug 17, 2023 · Omicron is a variant of SARS-CoV-2, the virus that causes COVID-19. It first appeared in November 2021 and quickly became the dominant variant around the world.
The Omicron Variant: Symptoms, Severity, and Protection
Jul 28, 2025 · The Omicron variant emerged as a major development in the global SARS-CoV-2 pandemic. First identified in Southern Africa in November 2021, it rapidly spread globally due to its …
Omicron variant | PBS News
Dec 3, 2025 · The XBB.1.5 subvariant — nicknamed ‘Kraken’ — is arguably the most genetically rich and most transmissible SARS-CoV-2 omicron subvariant yet. By Sameer Elsayed, The Conversation
Omicron Variant B.1.1.529 : Key Facts You Need to Know in 2025
May 28, 2025 · Health authorities have updated their public guidance after they found new Omicron variant strains in recent months. This article will provide clear facts about our current understanding …
Worldwide SARS-CoV-2 Omicron variant infection: Emerging sub-variants …
Jul 1, 2025 · The coronavirus disease 2019 (COVID-19) pandemic has sparked widespread concern globally, particularly with the Omicron variant and its sub-lineages e…