Timeline of the COVID-19 variants of concern
As of Nov. 26, 2021, there have been five SARS-CoV-2 variants of concern (VoC) that have surfaced and undergone transmission across the globe.
The most recently-discovered variant of coronavirus, Omicron, carries at least 50 mutations, making it a variant of concern — the most serious category assigned by the World Health Organization for coronavirus tracking.
Omicron has 30 mutations on the spike protein, and 26 unique mutations. In comparison to 10 unique mutations found in the Delta variant.
As of Nov. 29, 2021, no data is available to show the extent Omicron can evade immunity from the infected or the vaccinated.
On Nov. 28, 2021, WHO said that while researchers are trying to understand the transmissibility and severity of Omicron on individuals, “vaccines remain critical to reducing severe disease and death.”
So far, Omicron has been found in multiple countries, including Canada, Japan, France, Scotland, Portugal, and the U.S.
COVID-19 variant of concern timeline (Jasna Baric / CTV News)
Graphic by Jasna Baric
COVID-19 COVERAGE
CTVNews.ca Top Stories
'Hurts like hell': What goes into the price of gas in Canada
With the price of gas rising above $2 per litre and setting new records in Canada this year, CTVNews.ca looks at what goes into the price per litre of gasoline and where the situation could go from here.

'This is an unusual situation': Feds monitoring monkeypox cases in Canada
Canada's Chief Public Health Officer Dr. Theresa Tam says the federal government is monitoring monkeypox cases and their chains of transmission after two cases were confirmed in this country.
WHO calls emergency meeting as monkeypox cases cross 100 in Europe
The World Health Organization was due to hold an emergency meeting on Friday to discuss the recent outbreak of monkeypox, a viral infection more common to west and central Africa, after more than 100 cases were confirmed or suspected in Europe.
After N.B. police killing of Indigenous woman, chiefs demand systemic racism inquiry
The results of the recent coroner's inquest into the police killing of an Indigenous woman in New Brunswick demonstrate the urgent need for an Indigenous-led inquiry into systemic racism, according to the six chiefs of the Wolastoqey Nation.
'Holy grail of all finds': Ottawa boy finds gun while magnet fishing in creek
A 12-year-old Ottawa boy is sharing his story after a magnet fishing trip turned up an unexpected find.
What to do when your home appraisal falls short as the housing market cools
The cooling housing market has left some buyers with mortgages that can't cover the full cost of their home following an appraisal. Toronto-based mortgage broker Mary Sialtsis discusses what options these buyers have.
Why Canada is banning Huawei from participating in Canada's 5G network
The federal government is banning China's Huawei Technologies from involvement in Canada's 5G wireless network. Huawei and the Chinese government have vigorously denied accusations around the danger of spying, saying that the company poses no security threat.
'Buy now, pay later' plans could lead to exorbitant debt for Gen Z consumers: expert
'Buy now, pay later' plans are growing in popularity among Gen Z consumers, driven by influencers on TikTok and Instagram promoting these services. But one personal finance expert says these services can carry serious financial risks for young people.
Russian vodka, caviar and diamonds on new Canadian sanctions list
Foreign Minister Melanie Joly is today announcing a fresh wave of sanctions against Vladimir Putin's regime including a ban on importing Russian vodka, caviar and diamonds. The ban on the import of certain luxury goods from Russia covers alcoholic drinks, fish and seafood.