Omicron Variant

Omicron is a variant of SARS-CoV-2 first reported to the World Health Organization by the Network for Genomics Surveillance in South Africa on 24 November 2021. It was first detected in Botswana and has spread to become the predominant variant in circulation around the world. Following the original B.1.1.529 variant, several subvariants of Omicron have emerged including: BA.1, BA.2, BA.3, BA.4, and BA.5. Since October 2022, two subvariants of BA.5 called BQ.1 and BQ.1.1 have emerged. Three doses of a COVID-19 vaccine provide protection against severe disease and hospitalisation caused by Omicron and its subvariants. For three-dose vaccinated individuals, the BA.4 and BA.5 variants are more infectious than previous subvariants but there is no evidence of greater sickness or severity.

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What to Know About the New Omicron Variant

Most People Infected With COVID-19 Omicron Variant Didn’t Know It

New COVID-19 boosters could contain bits of the omicron variant

COVID-19 Omicron variant leads to less severe disease in mice, study finds

Omicron Variant Less Likely To Cause Long COVID

Long covid risk with omicron variant may be half what it is with delta

What We Know About the ‘Stealth’ BA.2 Omicron Variant

Mutations leading to omicron variant did not enable virus to fully escape immune system

Antivirals, some antibodies, work well against BA.2 omicron variant of COVID-19 virus

Third COVID Vaccine Dose Critical for Protecting Against Omicron Variant

COVID Omicron Variant Detected for First Time in White-Tailed Deer

Research Shows Moderna COVID-19 Vaccine Protection Is Not As Strong Against Omicron Variant

Omicron Variant Survives Longer On Plastic, Skin Than Previous Covid-19 Coronavirus Versions

The Omicron Variant Has New Versions Already. What Comes Next?

‘Stealth’ Omicron Variant No Cause for Alarm, but Could Slow Case Decline

What you need to know about the fast-spreading BA.2 omicron variant

Current COVID-19 Vaccines Teach T Cells To Fight Omicron Variant

The Omicron variant can survive longer than earlier versions of the coronavirus on plastic surfaces and human skin, Japanese researchers found in laboratory tests.

Why the Omicron variant causes less severe disease

Scientists Unveil World’s First Molecular-Level Analysis of COVID Omicron Variant Spike Protein